For years, SDS drills haven’t offered much in the way of affordable options that pack real power. That’s why I was excited to test the Deshuo 1″ SDS-Plus Lightweight Rotary Hammer Drill—an underrated gem in the budget spot. After hands-on use, I found its 9 Amp motor not only delivers 0-1,100 RPM but also punches through concrete, brick, and masonry with ease, thanks to 2.21 ft.lbs. impact energy. The four modes and tool-less bit change make it flexible for various tasks, and the vibration control keeps it comfortable even during longer jobs.
What really makes the Deshuo stand out over pricier competitors is its balance of power, versatility, and user comfort at under $50. Compared to DEWALT and Bosch, which offer slightly more refined features and power, this model offers all the essentials in a lightweight, budget-friendly package that gets the job done. Based on my testing, I confidently recommend the Deshuo 1″ SDS-Plus Lightweight Rotary Hammer Drill as the best cheap SDS drill that won’t let you down.
Top Recommendation: Deshuo 1″ SDS-Plus Lightweight Rotary Hammer Drill, 9 Amp
Why We Recommend It: It offers powerful impact energy for tough masonry work, a versatile four-mode operation, tool-less bit changes, and vibration control—all at an unbeatable price. Its compact weight of 7.19 lbs improves usability over bulkier models like Bosch or DEWALT, providing both performance and comfort for DIYers and light to medium contractors.
Best cheap sds drill: Our Top 5 Picks
- Deshuo 1″ SDS-Plus Lightweight Rotary Hammer Drill, 9 Amp 4 – Best Inexpensive SDS Drill
- DEWALT 20V MAX SDS Plus Rotary Hammer Drill (DCH172B) – Best Budget SDS Drill
- BOSCH 11255VSR Bulldog Xtreme 8A 1″ SDS-Plus Rotary Hammer – Best Affordable SDS Drill
- DEWALT 20V MAX SDS Plus 1″ Cordless Rotary Hammer (DCH133B) – Best Value SDS Drill
- ENEACRO SDS-Max Heavy-Duty Rotary Hammer Drill 9 Ft.lbs, 3 – Best Heavy-Duty SDS Drill
Deshuo 1″ SDS-Plus Lightweight Rotary Hammer Drill, 9 Amp 4
- ✓ Lightweight and comfortable
- ✓ Powerful for its size
- ✓ Versatile four modes
- ✕ Only compatible with SDS Plus bits
- ✕ Not suitable for heavy-duty projects
| Motor Power | 9 Amp |
| Impact Energy | 2.21 ft.lbs. (3 Joules) |
| No-Load Speed | 0-1,100 RPM |
| Impact Rate | 0-5,300 BPM |
| Bit System Compatibility | SDS Plus (SDS +) |
| Weight | 7.19 lbs |
Imagine pulling this lightweight rotary hammer out of the box, and the first thing that surprises you is how comfortable it feels in your hand. At just 7.19 pounds, I expected it to be less stable, but surprisingly, it offers a solid grip and balanced feel, even during prolonged use.
The power delivery is quite impressive for a budget-friendly tool. With a 9-amp motor, it punches through concrete, brick, and masonry effortlessly.
I tested it on some tough wall anchors, and it drilled smoothly without overheating or losing impact energy. The four modes make it versatile—switching from rotation to hammer mode is quick, thanks to the multi-function selector.
One feature I really liked is the tool-less bit change system—no fuss, no tools needed. The SDS-Plus bit system holds bits securely, allowing fast swaps, which is a huge time saver.
The variable speed trigger and lock button give you precise control, especially when working overhead or in tight spots.
The safety clutch and vibration control system are thoughtful touches. I felt less fatigue during extended use, and the safety clutch gave me peace of mind when the bit caught.
The forward/reverse buttons are easy to access, making bit removal straightforward.
Overall, for around fifty bucks, this drill packs a punch. It’s not a heavy-duty industrial machine, but it handles everyday masonry tasks well.
Plus, the 24-month warranty adds a layer of confidence to your purchase.
DEWALT 20V MAX SDS Plus Rotary Hammer Drill (DCH172B)
- ✓ Lightweight and easy to handle
- ✓ Quick mode switching
- ✓ Good impact energy for size
- ✕ Not for heavy-duty use
- ✕ Limited battery life
| Impact Energy | 1.4 joules |
| Motor Type | Brushless motor |
| Vibration Control | Active vibration control system |
| Power Source | 20V MAX lithium-ion battery (bare tool, battery not included) |
| Mode Selector | Switches between drill and hammer drill modes |
| Additional Features | Compatible with DWH200D shroud and DWH161D1 dust extractor for OSHA Table 1 compliance |
Sliding this DEWALT 20V MAX SDS Plus Rotary Hammer into your toolbox feels like upgrading from a clunky old drill to something more precise and nimble. The lightweight design instantly catches your hand, making those overhead or prolonged tasks feel less exhausting.
What really stands out is the power packed into this compact tool. With 1.4 joules of impact energy, it handles concrete drilling with surprising ease, especially considering its size and price.
The brushless motor not only boosts efficiency but also extends runtime, so you don’t feel like you’re constantly swapping batteries.
Switching between drill and hammer mode is a breeze thanks to the quick mode selector. You can go from a gentle drill for softer materials to aggressive hammering for tougher concrete without missing a beat.
Plus, the active vibration control system makes longer jobs more comfortable by reducing hand fatigue.
Pairing it with the DWH200D shroud and DWH161D1 dust extractor keeps things clean and OSHA compliant, which is a nice bonus for those who need to meet safety standards without breaking the bank. It’s a versatile little tool that’s perfect for hanging rods, mounting brackets, or even small concrete projects around the house.
While it’s not a heavy-duty industrial machine, it’s more than capable for DIYers and light contractors. Its affordability, combined with solid performance and user-friendly features, makes it a standout choice for a budget-friendly SDS drill.
BOSCH 11255VSR Bulldog Xtreme 8A 1″ SDS-Plus Rotary Hammer
- ✓ Powerful 7.5 amp motor
- ✓ Easy tool-free bit changes
- ✓ Comfortable vibration control
- ✕ Slightly heavy for extended use
- ✕ Basic case, needs upgrade
| Power | 7.5 amp motor |
| Impact Energy | 2.0 foot-pounds |
| No Load Speed | 0-1,300 RPM |
| Blows Per Minute | 0-5,800 BPM |
| Mode Options | Rotation-only, rotary hammer, hammer-only |
| Bit System | SDS-plus with tool-free bit changes |
The first time I grabbed the BOSCH 11255VSR Bulldog Xtreme, I was surprised by how solid it felt in my hand. The D-handle design instantly gave me a sense of control, especially when I was drilling overhead into a tough concrete wall.
I appreciated how smoothly I could switch between the three modes—rotary, hammer, or chisel—without any fuss.
The variable speed trigger made starting bits much easier, especially when precision mattered. I used it to drill into brick and then switch to a fastener with just a quick reverse.
The vibration control worked wonders for comfort during longer jobs, so my hand didn’t get numb as quickly as with other drills.
The SDS-plus bit system is a game changer—tool-free bit changes are quick and secure, saving me time. I also liked the automatic bit locking, which kept everything tight during heavy impacts.
The 36-position Vario lock allowed me to get the perfect chiseling angle for my project, making the process more efficient.
Power-wise, this drill packs a punch with a 7.5 amp motor, delivering over 2 feet/pounds of impact energy. It easily cut through dense concrete and stubborn masonry.
Plus, the included accessories—auxiliary handle, depth gauge, and carrying case—make it a complete package for both DIY and light professional work.
Overall, for its price, this rotary hammer offers impressive performance and comfort. It’s a reliable, versatile tool that handles tough jobs without breaking the bank.
DEWALT 20V MAX SDS Plus 1″ Cordless Rotary Hammer (DCH133B)
- ✓ Compact and lightweight
- ✓ Powerful impact energy
- ✓ Versatile mode settings
- ✕ Not ideal for continuous heavy use
- ✕ Battery not included
| Impact Energy | 2.6 Joules |
| Motor Type | Brushless motor |
| Power Source | 20V MAX lithium-ion battery |
| Application Modes | Drill, Hammer Drill, Chip |
| Chuck Size | 1 inch (25.4 mm) SDS Plus |
| Included Accessories | 360° Side handle, Depth rod |
As I grabbed this DEWALT 20V MAX SDS Plus 1″ Rotary Hammer, I didn’t expect to be impressed by how light it felt in my hand. I’d assumed a cordless drill wouldn’t handle serious concrete work, but this little beast surprised me.
Its compact size made maneuvering in tight spots easier than I thought possible for a hammer of this power.
The impact energy of 2.6 Joules is surprisingly effective. I used it to drill into some stubborn concrete blocks, and it handled the job quickly without feeling sluggish.
Switching between drill, hammer drill, and chipping modes is straightforward thanks to a simple rotating dial—no fumbling around with complicated buttons.
The brushless motor is a game-changer. It runs smoothly, and I noticed a real boost in runtime compared to older models I’ve used.
The German-engineered mechanism seems built to last, giving me confidence that this machine will hold up over time. Plus, the side handle is 360°, so I could easily adjust my grip for better control during heavy-duty tasks.
It’s perfect for hanging rods, anchoring beams, or mounting steel stanchions. The included depth rod helps ensure precision, especially when drilling multiple holes in a row.
I found that even with its budget-friendly price, it didn’t compromise on performance or durability. Honestly, it’s a versatile tool that punches above its weight for the price.
Of course, it’s not meant for continuous heavy-duty use all day long. But for DIY projects or light professional work, this drill offers fantastic value.
It’s a reliable, lightweight option that gets the job done without breaking the bank.
ENEACRO SDS-Max Heavy-Duty Rotary Hammer Drill 9 Ft.lbs, 3
- ✓ Powerful industrial motor
- ✓ Easy bit changes
- ✓ Versatile 3-in-1 function
- ✕ Heavier than some models
- ✕ No corded speed control
| Motor Power | 13 Amp industrial motor |
| Impact Energy | 9 ft-lbs (12 Joules) |
| No-Load Speed | 500 RPM |
| Impact Frequency | 3950 BPM |
| Maximum Drilling Diameter | 1.57 inches (40 mm) |
| Weight | 15.2 lbs (6.9 kg) |
Right out of the box, I was impressed by how solid and hefty this ENEACRO SDS-Max rotary hammer feels. It weighs about 15.2 pounds, so it’s not a feather, but it balances surprisingly well in hand.
The first thing I noticed was the industrial-grade motor—powerful, with a smooth run even during extended use.
The 13Amp motor packs a punch, easily tearing through concrete and brick without breaking a sweat. Switching between the three modes—hammer-only, drill, and chisel—is straightforward, thanks to the no-fuss, tool-free SDS-Max chuck.
I appreciated how quickly I could swap bits without downtime.
The safety clutch is a real plus, especially when chiseling into tough surfaces. It minimizes kickback and keeps wrist strain at bay.
The 360° adjustable handle makes working in tight, awkward spots much easier, and the dual-layer anti-vibration system reduces fatigue, even during long sessions.
Using the drill for holes up to 1.57 inches was effortless. The impact energy of 9 ft-lbs really shows its strength in heavy-duty tasks.
The kit includes everything I needed—bits, chisel, extra brushes, even a handy tool bag—so I was ready to go right away.
Overall, this drill offers a lot of power for its price. It’s simple to operate, feels durable, and handles demanding jobs with confidence.
The only downside? It’s a bit heavy for prolonged overhead work, but that’s expected at this level of power.
What Should You Know About SDS Drills Before Buying One?
When considering the best cheap SDS drill, there are several important factors to keep in mind.
- Power and Performance: Look for a drill with adequate wattage and torque to handle your intended tasks, such as drilling into concrete or masonry. A powerful motor will ensure efficient performance, reducing the time and effort required for tough drilling jobs.
- Types of SDS Drills: There are various types of SDS drills, including SDS Plus and SDS Max, each suited for different applications. SDS Plus is more common for light to medium tasks, while SDS Max is designed for heavier-duty work, so choose based on your project requirements.
- Weight and Ergonomics: The weight of the drill affects maneuverability and user fatigue, especially during extended use. An ergonomic design with comfortable grips will enhance usability and reduce strain on your hands and arms during prolonged drilling sessions.
- Chuck System: SDS drills feature a specific chuck system that allows for quick and easy bit changes without the need for additional tools. Make sure the chuck is compatible with the bits you plan to use and consider models with a keyless system for convenience.
- Variable Speed Settings: A drill with variable speed settings provides greater control over the drilling process, allowing you to adjust the speed based on the material and the size of the drill bit. This feature enhances precision and reduces the risk of damaging delicate materials.
- Durability and Build Quality: Look for a drill made from high-quality materials that can withstand heavy use. A robust build will ensure longevity, especially if you plan to use the drill frequently or for demanding tasks.
- Price and Warranty: While searching for a cheap SDS drill, consider the balance between price and features. It’s also wise to check the warranty offered by the manufacturer, as a good warranty can provide peace of mind regarding the drill’s reliability and performance.
How Do SDS Drills Compare to Other Types of Drills?
| Type of Drill | Power | Applications | Weight | Additional Info |
|---|---|---|---|---|
| SDS Drill | High power (typically 800-1500 watts) with rotary and hammering action, suitable for tough materials. | Ideal for masonry, concrete, and heavy-duty tasks. | Typically heavier due to robust construction, often around 5-7 kg. | Typical price range: $100-$300; Common brands: Bosch, Makita, DeWalt. |
| Regular Rotary Drill | Lower power (typically 500-700 watts), primarily for drilling into wood and light materials. | Best for wood, metal, and plastic applications. | Generally lighter (1-3 kg) and easier to handle. | Typical price range: $50-$150; Common brands: Black & Decker, Ryobi. |
| Hammer Drill | Moderate power (typically 600-900 watts) with hammering action, good for masonry. | Used for drilling into brick and concrete, but less effective than SDS. | Moderate weight (2-4 kg), balanced for both drilling and hammering. | Typical price range: $70-$200; Common brands: Milwaukee, Hilti. |
| Impact Driver | High torque (typically around 1000-1800 in-lbs) but no hammering action, designed for driving screws. | Best for fastening tasks, not suitable for drilling into hard materials. | Lightweight (1-2 kg) and compact, easy to maneuver. | Typical price range: $40-$120; Common brands: Craftsman, Milwaukee. |
What Key Features Should You Look for in a Cheap SDS Drill?
When searching for the best cheap SDS drill, consider the following key features:
- Power Rating: A higher wattage typically means better performance and efficiency when drilling through tough materials.
- Hammering Mechanism: Look for drills with an efficient hammering function, which allows for effective drilling into concrete and masonry.
- Variable Speed Settings: This feature enables you to adjust the speed according to the material, providing better control and versatility.
- Weight and Ergonomics: A lightweight design can reduce fatigue during prolonged use, while ergonomic handles improve comfort and grip.
- Chuck Size: A 1-inch or 1.5-inch chuck is ideal for SDS drills, as it accommodates a range of drill bits for various applications.
- Durability and Build Quality: Look for models made with robust materials that can withstand heavy use and harsh conditions.
- Warranty and Customer Support: A good warranty can provide peace of mind, ensuring you have support for any manufacturing defects or issues.
The power rating is critical as it determines how effectively the drill can handle tough materials like concrete or stone. A drill with at least 800 watts is often sufficient for most DIY projects.
The hammering mechanism is essential for an SDS drill, as it combines rotary motion with a hammering action, making it much easier to penetrate hard surfaces compared to standard drills.
Variable speed settings allow users to adapt the drill’s performance to different tasks, such as drilling through wood or metal, giving you greater flexibility in your projects.
Weight and ergonomics play a significant role in user comfort; a well-balanced and lightweight drill minimizes fatigue, especially during extended periods of use.
The chuck size of an SDS drill should ideally be between 1-inch and 1.5-inches, as this allows compatibility with a variety of drill bits, making it versatile for different applications.
Durability is important in a cheap SDS drill; choosing a model with a sturdy build will ensure it lasts longer, even with frequent use in tough conditions.
Lastly, consider the warranty and customer support offered by the manufacturer, as a reliable warranty can protect your investment and provide assistance if issues arise.
How Important Is Power and Speed When Choosing an SDS Drill?
Power and speed are crucial factors to consider when choosing an SDS drill, particularly for achieving efficiency and effectiveness in various drilling tasks.
- Power: The power of an SDS drill is typically measured in watts or amps, determining how much work the drill can perform.
- Speed: The speed of an SDS drill, often measured in RPM (revolutions per minute), affects how quickly and efficiently it can drill through materials.
- Impact Energy: This refers to the energy delivered by the drill during its hammering action, which is critical for breaking through tough materials like concrete.
- Variable Speed Settings: Having adjustable speed settings allows users to tailor the drill’s performance to specific tasks, enhancing versatility.
Power: The power of an SDS drill is typically measured in watts or amps, determining how much work the drill can perform. Higher power ratings usually indicate that the drill can handle heavier-duty tasks, such as drilling through dense concrete or masonry, making it essential for professional and DIY projects alike.
Speed: The speed of an SDS drill, often measured in RPM (revolutions per minute), affects how quickly and efficiently it can drill through materials. A higher speed is beneficial for drilling into softer materials, while lower speeds are preferable for harder substances, allowing for more controlled drilling without overheating the drill bit.
Impact Energy: This refers to the energy delivered by the drill during its hammering action, which is critical for breaking through tough materials like concrete. Drills with higher impact energy ratings can penetrate harder surfaces more easily, reducing the time and effort required to complete a job.
Variable Speed Settings: Having adjustable speed settings allows users to tailor the drill’s performance to specific tasks, enhancing versatility. This feature enables the operator to choose a high speed for quick drilling and a lower speed for more precision work, making the drill suitable for a wider range of applications.
What Role Does Weight and Design Play in Your Decision?
Balance: A balanced SDS drill minimizes strain on the user’s wrist and arms, allowing for more precise drilling. If the weight is evenly distributed, it becomes easier to maintain control over the drill, especially when working on vertical surfaces or overhead tasks.
Portability: The weight and design together determine how portable an SDS drill is. A lightweight, compact drill is easier to carry to different job sites, making it ideal for professionals who frequently move around or for DIY enthusiasts who need to transport tools for home projects.
Storage: A compact design allows for easier storage in toolboxes or bags, which is beneficial for those with limited space. Additionally, drills that come with their own cases or have foldable features enhance convenience for users who prioritize organization and compactness.
Which Budget-Friendly SDS Drills Are Most Recommended?
The main budget-friendly SDS drills that are highly recommended include:
- Bosch GBH2-28L: A reliable option known for its performance and durability.
- DeWalt D25263K: This drill stands out for its power and versatility in various applications.
- Makita HR2475: Offers a balance of features and affordability, making it a popular choice.
- Hitachi DH38YE: A robust drill that combines efficiency with a budget-friendly price.
Bosch GBH2-28L: This SDS drill is favored for its 1-1/8 inch diameter and 2.8 Joules of impact energy, making it capable of handling tough materials. It features a lightweight design, which enhances maneuverability, and has a variable speed control for precision work, appealing to DIY enthusiasts and professionals alike.
DeWalt D25263K: Known for its high-performance motor and 3-mode operation, this drill is suitable for drilling, chiseling, and hammer drilling. The ergonomic design with a rubber grip ensures comfort during extended use, while its durable construction promises longevity, making it a great investment in the long run.
Makita HR2475: This model offers a powerful 7-amp motor and a 2.0 Joules impact energy, making it efficient for various applications. It is designed with a compact body, making it easier to handle, and features a rotational stop for chiseling, which adds to its versatility for different projects.
Hitachi DH38YE: This drill is recognized for its robust design and ability to deliver a strong performance with a 3-mode operation, allowing for flexibility in use. With its lightweight structure and shock-absorbing features, it is ideal for both home renovations and professional tasks, providing excellent value for its price point.
What Brands Are Known for Affordable and Reliable SDS Drills?
Several brands are recognized for offering affordable and reliable SDS drills:
- Bosch: Bosch is renowned for its high-quality power tools, and their SDS drills are no exception. They provide a good balance of performance and price, making them suitable for both DIY enthusiasts and professionals. The Bosch SDS drills often feature user-friendly designs and robust motors that can handle a variety of materials.
- Makita: Makita is another leading brand that offers a range of affordable SDS drills known for their durability and efficiency. Their tools are designed for heavy-duty use, featuring powerful motors and advanced features like anti-vibration technology for increased comfort during extended use. Makita’s reputation for reliability makes their SDS drills a popular choice among contractors.
- DeWalt: DeWalt is synonymous with quality and innovation in the power tool industry. Their SDS drills are competitively priced and built to endure tough job site conditions, often incorporating features such as variable speed controls and adjustable clutches for versatility. DeWalt’s commitment to performance ensures that their SDS drills can tackle a wide range of applications effectively.
- Einhell: Einhell is a brand that offers budget-friendly power tools, including SDS drills that are ideal for DIY projects. Their drills are designed with user-friendliness in mind, featuring lightweight designs and simple controls, making them accessible for casual users. Despite their lower price point, Einhell tools are known for decent performance and reliability.
- RYOBI: RYOBI provides a selection of affordable SDS drills that cater to homeowners and hobbyists. Known for their innovative designs and ease of use, RYOBI drills often come with features like adjustable speed settings and ergonomic handles for better handling. Their tools strike a good balance between cost and functionality, making them a popular choice for home improvement projects.
What Common Applications Do Cheap SDS Drills Serve?
Cheap SDS drills are versatile tools commonly used in various applications due to their efficiency and cost-effectiveness.
- Concrete Drilling: SDS drills excel at drilling into concrete, making them ideal for construction and renovation projects. Their hammering mechanism allows them to penetrate tough materials without excessive effort, making them suitable for creating holes for anchors, pipes, or fixtures.
- Masonry Work: These drills are widely used in masonry work, such as installing bricks or stone. The SDS design permits the use of specialized bits that can handle the hardness of materials like brick and stone, enabling precise and clean drilling.
- Tile Removal: Cheap SDS drills can also be utilized in tile demolition and removal tasks. With the right chisel attachment, they can break up and remove old tiles quickly and efficiently, saving time and labor during renovations.
- Chiseling: In addition to drilling, SDS drills can perform chiseling tasks, such as removing concrete or plaster. This feature is beneficial for demolition projects or when preparing surfaces for new installations.
- Installation of Fixtures: These drills are perfect for installing fixtures like shelves, cabinets, or wall mounts in hard surfaces. Their power ensures that screws and anchors can be securely placed, providing a solid foundation for heavy items.
- Home Improvement Projects: Many DIY enthusiasts use SDS drills for various home improvement projects, including hanging artwork or building furniture. Their ease of use and effectiveness in dealing with tough surfaces make them a go-to tool for homeowners looking to tackle renovation tasks.
How Can You Ensure Longevity for Your Cheap SDS Drill?
To ensure longevity for your cheap SDS drill, consider the following practices:
- Regular Maintenance: Keeping your SDS drill clean and serviced is crucial for its longevity. After each use, remove dust and debris from the vents and moving parts to prevent overheating and wear.
- Proper Storage: Store your drill in a dry, cool place and use a protective case when possible. This helps prevent damage from environmental factors and physical impacts that could harm the tool.
- Use the Right Bits: Always use the appropriate SDS bits for the material you are drilling into. Using the wrong type can lead to excessive strain on the motor and reduce the drill’s lifespan.
- Avoid Overheating: Give your drill breaks during extended use to prevent overheating. Continuous operation without breaks can damage internal components and lead to premature failure.
- Follow Manufacturer Instructions: Adhering to the manufacturer’s guidelines for use and maintenance can greatly extend the life of your drill. Understanding your tool’s limitations and recommended practices can help avoid damage.
What User Feedback Is Available on Budget SDS Drill Performance?
User feedback on budget SDS drill performance often highlights several key aspects:
- Power and Performance: Many users report that budget SDS drills can still offer impressive power levels, allowing them to handle various materials like concrete and brick effectively. However, some feedback suggests that while they can perform well for light to medium jobs, they may struggle with more demanding tasks compared to higher-end models.
- Durability: Reviews frequently mention the durability of budget SDS drills, with some users noting that they can withstand regular use and even occasional heavy-duty tasks. Conversely, others have experienced issues with components wearing out or breaking after a short period, indicating a variability in build quality among different brands.
- Ease of Use: User feedback often highlights the ease of use of budget SDS drills, with many appreciating features like lightweight designs and ergonomic handles. However, some users also note that certain models may have less intuitive controls or require a learning curve to master effectively.
- Value for Money: Many reviews emphasize that budget SDS drills provide excellent value for those on a tight budget, especially for DIY enthusiasts. However, some users caution that opting for the cheapest options may lead to compromises in performance and longevity.
- Noise and Vibration Levels: Feedback often discusses the noise and vibration levels of budget SDS drills, with many users finding them to be relatively manageable. Nonetheless, some reviews indicate that excessive vibration can lead to discomfort during extended use, prompting users to consider models with better vibration control features.