
Bosch GSR12V-140FCB22
Score: 85/100
Milwaukee M12 Fuel Hammer Drill
Score: 90/100Rankings

The Milwaukee M12 FUEL 1/2" Hammer Drill is the most compact and lightweight hammer drill in its 12V class, featuring a POWERSTATE brushless motor and REDLINK PLUS intelligence. It delivers high torque and speed in a subcompact form factor, making it ideal for tight spaces and all-day use by tradespeople. Best suited for professionals such as electricians, plumbers, and HVAC techs who need a lightweight, compact drill for overhead, confined, or all-day use without fatigue.

The Bosch GSR12V-140FCB22 is a compact 12V Max cordless drill/driver featuring a versatile FlexiClick 5-in-1 attachment system and an EC Brushless motor. Weighing only 1.4 lbs with a 5.2-inch head length, it delivers 265 in.-lbs. of torque, making it ideal for tight spaces and confined areas. Best for professionals and DIYers working in tight or confined spaces such as cabinetry, electrical work, HVAC installations, and furniture assembly.
| Attribute | ![]() | ![]() |
|---|---|---|
12 Vbest | 12 Vbest | |
265 in-lbs | 400 in-lbsbest | |
0.25 in | 0.5 inbest | |
2 Ahbest | — | |
| ↓ lower better | 0.635 kgbest | 0.998 kg |
1,300 RPM | 1,700 RPMbest | |
21 positionsbest | 17 positions | |
2 speedsbest | 2 speedsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Performance(3) | ||
Max Torque (in-lbs) | 265 in-lbs | 400 in-lbs |
No-Load Speed (RPM) | 1300 RPM | 1700 RPM |
Clutch Settings (positions) | 21 positions | 17 positions |
Support & Extras(1) | ||
Warranty (years) | 1 years | 3 years |
Design & Ergonomics(4) | ||
Chuck Size (in) | 0.25 in | 0.5 in |
Weight (kg) | 0.635 kg | 0.998 kg |
LED Work Light | false | true |
Overall Length (in) | 5.2 in | 6.0 in |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the Bosch GSR12V-140FC as a highly versatile 'Swiss Army knife' for cordless tools, highlighting its ability to deliver 265 in.-lbs. of torque in a compact 7-inch by 5.2-inch package. Experts appreciate the keyless chuck, 1/4-inch hex size, and the innovative FlexiClick system, noting its exceptional performance in tight spaces.
Everyday users and aggregated feedback indicate strong satisfaction with the tool's compactness and its ability to handle small jobs and furniture assembly effectively. The completeness of the kit, including two batteries and a charger, is frequently praised. However, recurring themes of dissatisfaction involve the power limitations for larger fasteners and the inconvenience of time spent swapping attachments during projects.




Professional reviewers and editors praise the Milwaukee M12 FUEL Hammer Drill as the most capable 12V hammer drill on the market, highlighting its class-leading compactness, power, and balance. Experts specifically commend its unrivaled performance, durability due to all-metal construction, and the widest application range in the high-speed subcompact category, noting that it complements impact drivers well for versatile bit usage.
Everyday users commonly praise the tool's portability, low fatigue, and surprising power for its size, particularly noting its effectiveness in wood, metal, and masonry. Recurring themes include appreciation for the LED light and variable trigger, but complaints focus on the need for precise clutch adjustment to avoid over-speeding in delicate tasks and a desire for more torque in very tough materials.