Bosch PS21-2A 12V Max 2-Speed Pocket Driver Review


The Bosch PS21-2A 12V Max 2-Speed Pocket Driver is a small and adaptable tool created to offer effective and dependable performance for a wide range of jobs. Its compact size and versatile features make it a handy companion for both professionals and DIY enthusiasts, allowing for easy handling in tight spaces and delivering the power and control needed for various drilling and driving applications.


Speed2-Speed (0-350 RPM / 0-1,300 RPM)
Torque265 in-lbs
Chuck Size1/4″ Hex
Weight1.8 lbs
Dimensions5.6″ x 2.8″ x 7.0″

Key Features of Bosch PS21-2A 12V Max 2-Speed Pocket Driver

Bosch PS21-2A 12V Pocket Driver with bit on a light background
  • The Bosch PS21-2A 12V Max 2-Speed Pocket Driver boasts a compact size, making it easy to handle in tight spaces, providing exceptional maneuverability for various tasks.
  • Its two-speed transmission allows for optimal speed and torque control, catering to different drilling and driving needs, and ensuring efficient performance in a variety of applications.
  • The inclusion of an LED light enhances visibility in dark work areas, improving precision and accuracy during operation, thereby enhancing user experience and safety.
  • With 20+1 clutch settings, the pocket driver offers precise torque adjustment, allowing for secondary adjustments to meet the specific demands of different tasks, ensuring versatility and control.

Design and Build Quality

Bosch PS21-2A driver with batteries and charger in a case.

The Bosch PS21-2A 12V Max 2-Speed Pocket Driver is built to last and designed for comfortable, long-term use. Its durable and ergonomic build ensures that it can withstand the demands of various working conditions, providing reliability and longevity. The tool’s robust design guarantees that it remains functional and comfortable, even during extended periods of use, making it a dependable and lasting addition to any toolbox.


Hands using Bosch PS21-2A Pocket Driver on wood in a workshop.

The Bosch PS21-2A 12V Max 2-Speed Pocket Driver showcases remarkable power and speed, making it well-suited for a variety of driving and drilling tasks. Its variable speed trigger allows for seamless acceleration and enhanced control, contributing to improved precision during operation.

This combination of power, speed, and control makes the pocket driver a reliable and efficient tool for a wide range of applications, catering to both professionals and DIY enthusiasts alike.

Ease of Use and Maneuverability

Close-up of Bosch PS21-2A Pocket Driver with active LED light.

The Bosch PS21-2A 12V Max 2-Speed Pocket Driver’s small and light build, along with its comfortable design, ensures that it can be easily maneuvered and used without causing excessive tiredness during extended periods of operation. This means users can work for longer without feeling overly exhausted, making the tool suitable for a wide range of tasks and users, from professionals to DIY enthusiasts.

Bosch PS21-2A 12V Max 2-Speed Pocket Driver Pros and Cons


  • Compact and lightweight design
  • Excellent torque and speed control
  • LED light for improved visibility
  • Versatile for various applications


  • Limited power for heavy-duty tasks
  • Small size may not suit all hand sizes

Comparative Analysis of the Bosch PS21-2A 12V Max 2-Speed Pocket Driver

FeaturesBosch PS21-2A 12V Max 2-Speed Pocket Driver
Bosch PS21-2A 12V Max
Milwaukee 2401-22 M12 Cordless Screwdriver
Milwaukee 2401-22 M12
Voltage12V Max12V12V MAX*
Battery TypeLithium-IonLithium-IonLithium-Ion
Speed0-350 RPM / 0-1,300 RPM0-500 RPM0-425 RPM
Chuck Size1/4 inch hex1/4 inch hex1/4 inch hex
Weight1.8 lbs2 lbs1.1 lbs
Key FeaturesCompact design, 2-speed gearbox, 20+1 clutch settings, Built-in LED lightQuick-change chuck, LED light, Battery fuel gauge3 LED lights, Brushless motor, Belt hook
ProsLightweight, High torque, Precise speed control, VersatilePowerful for its size, Versatile, Easy to useCompact, Powerful, Durable
ConsLimited battery life compared to larger models, Not suitable for heavy-duty drilling tasksLimited speed range, Battery life variesHigher price, Limited torque for heavy-duty tasks
Suitable forPrecision driving and drilling tasks, Tight spaces, DIY projectsGeneral screwdriving tasks, Tight spaces, Precision workPrecision work, Light to medium tasks, Tight spaces


The Bosch PS21-2A 12V Max 2-Speed Pocket Driver is a compact and versatile tool ideal for precision driving and drilling tasks. Its key features include a 2-speed gearbox, 20+1 clutch settings, and a built-in LED light. It is suitable for tight spaces and DIY projects, but its battery life may be limited compared to larger models.

The Milwaukee 2401-22 M12 Cordless Screwdriver is powerful for its size and offers versatility with its quick-change chuck and LED light. It is well-suited for general screwdriving tasks and precision work in tight spaces, though its speed range and battery life may be limited.

The DEWALT DCF601B 12V MAX* Screwdriver is a compact and powerful tool with a brushless motor and 3 LED lights. It is suitable for precision work and light to medium tasks in tight spaces. However, its higher price and limited torque may be drawbacks for some users.


Maintaining and caring for your Bosch PS21-2A 12V Max 2-Speed Pocket Driver is essential to ensure its longevity and optimal performance. Here are some tips to keep your tool in top condition:

Bosch PS21-2A Pocket Driver, batteries, charger, and case on white background.
  1. Clean Regularly: After each use, wipe the tool with a clean, dry cloth to remove any dust, debris, or grease. Use a soft brush to clean hard-to-reach areas.
  2. Check for Damage: Inspect the tool regularly for any signs of wear or damage. Check the chuck, gearbox, and housing for cracks or loose parts. If you notice any issues, have the tool repaired by a professional before using it again.
  3. Lubricate Moving Parts: Apply a small amount of light machine oil to moving parts, such as the chuck and gearbox, to keep them operating smoothly. Avoid using too much oil, as this can attract dust and debris.
  4. Store Properly: When not in use, store the tool in a dry, cool place. Avoid exposing it to extreme temperatures or moisture, as this can damage the battery and electronic components.
  5. Battery Care: To maximize battery life, charge the batteries only when they are fully discharged. Avoid leaving the battery in the charger for extended periods. Store batteries in a cool, dry place and recharge them every few months if not in use.
  6. Check for Updates: Bosch occasionally releases firmware updates for their tools. Check the Bosch website or contact customer service to see if there are any updates available for your model.
  7. Use Genuine Parts: When replacing parts or accessories, use only genuine Bosch parts to ensure compatibility and safety.

Practical Tips for Use

To get the most out of your Bosch PS21-2A 12V Max 2-Speed Pocket Driver, consider the following practical tips:

Helpful tips icon
  • Select the Right Bit: Always use the correct bit size and type for the screw or material you’re working with. This ensures a snug fit and reduces the risk of stripping the screw head.
  • Adjust Speed and Torque: Use the lower speed setting (0-350 RPM) for more control when starting a screw or drilling in delicate materials. Switch to the higher speed setting (0-1,300 RPM) for faster drilling or driving in tougher materials. Adjust the torque setting based on the material’s hardness and the screw size.
  • Use the Clutch Settings: The 20+1 clutch settings allow you to precisely control the depth and torque of the screw. Start with a lower setting and increase it until you achieve the desired result without overdriving or stripping the screw.
  • Maintain a Steady Grip: Hold the tool firmly with both hands, if possible, to ensure stability and accuracy. Keep your grip comfortable to reduce fatigue during extended use.
  • Utilize the LED Light: The built-in LED light illuminates the work area, making it easier to see what you’re doing, especially in dimly lit spaces. Make sure the light is directed towards your work surface.
  • Keep Batteries Charged: Always have a spare battery charged and ready to go. This way, you can switch batteries and continue working without interruptions.
  • Drill Pilot Holes: For precise screw placement or when working with hardwoods, drill pilot holes slightly smaller than the screw diameter. This makes driving the screw easier and prevents splitting the material.
  • Be Mindful of Overheating: If the tool starts to overheat, take a break and let it cool down before continuing. Overheating can damage the motor and reduce the tool’s lifespan.
  • Store Bits in the Tool: The Bosch PS21-2A features onboard storage for two bits. Keep your most commonly used bits in these slots for quick access.
  • Practice Safety: Always wear appropriate protective gear, such as safety glasses and gloves, when using the tool. Keep your work area clean and well-lit, and be aware of your surroundings to avoid accidents.


The Bosch PS21-2A 12V Max 2-Speed Pocket Driver is a highly efficient and versatile tool that offers great value for both professional and DIY users. Its compact design, adjustable speed and torque settings, and built-in LED light make it an excellent choice for a wide range of drilling and driving tasks. While it may have limitations in power for heavy-duty tasks, its performance in tight spaces and precision work is commendable. Overall, the Bosch PS21-2A 12V Max 2-Speed Pocket Driver is a reliable and convenient tool that is well-suited for various applications.

Frequently Asked Questions (FAQs)

1. What is the maximum torque of the Bosch PS21-2A 12V Max 2-Speed Pocket Driver?

The maximum torque is 265 in-lbs.

2. Can the Bosch PS21-2A 12V Max 2-Speed Pocket Driver be used for drilling?

Yes, it can be used for light drilling tasks, especially in tight spaces.

3. Is the battery included with the Bosch PS21-2A 12V Max 2-Speed Pocket Driver?

Yes, it comes with two 12V Max Lithium-Ion batteries.

4. What is the weight of the Bosch PS21-2A 12V Max 2-Speed Pocket Driver?

It weighs approximately 1.8 lbs.

5. Does the Bosch PS21-2A 12V Max 2-Speed Pocket Driver have a variable speed trigger?

Yes, it has a variable speed trigger for better control.

6. Can the Bosch PS21-2A 12V Max 2-Speed Pocket Driver be used in dark areas?

Yes, it has a built-in LED light to illuminate dark work areas.

7. What is the chuck size of the Bosch PS21-2A 12V Max 2-Speed Pocket Driver?

The chuck size is 1/4″ hex.

8. How long is the warranty for the Bosch PS21-2A 12V Max 2-Speed Pocket Driver?

It typically comes with a 1-year warranty, but it’s best to check with the manufacturer or retailer for specific details.

9. Can the Bosch PS21-2A 12V Max 2-Speed Pocket Driver handle heavy-duty tasks?

It is designed for precision tasks and may not be suitable for heavy-duty drilling or driving.

10. Is the Bosch PS21-2A 12V Max 2-Speed Pocket Driver suitable for professional use?

Yes, it is suitable for both professional and DIY use, especially for tasks that require precision and maneuverability in tight spaces.

Arthur Cooper
Arthur Cooper
Forestry Author


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