
Ingersoll Rand 3107G
Score: 82/100
Bosch GWG12V-20SN
Score: 85/100Rankings

The Bosch GWG12V-20SN is a bare tool cordless 12V Max brushless right-angle die grinder designed for precision grinding in tight spaces. It features an ultra-compact ergonomic design weighing 1.2 lbs, variable speed control up to 15,000 RPM, and an LED interface for status monitoring. This tool is engineered to provide the power and speed of air tools with the portability and comfort of a cordless system.

The Ingersoll Rand 3107G is a 1/4-inch straight air die grinder from the EDGE Series featuring a 0.33 hp motor and 27,000 rpm maximum free speed. It is designed for finishing, cutting, polishing, and light weld grinding with an ergonomic grip and rear exhaust system. Best suited for professionals needing a versatile, high-speed air die grinder for porting, light weld grinding, and deburring in fabrication contexts.
| Attribute | ![]() | ![]() |
|---|---|---|
27,000 RPMbest | 15,000 RPM | |
| ↓ lower better | 0.64 kg | 0.54 kgbest |
168 mm | 190.5 mmbest | |
0.33 Wbest | — | |
150 mmbest | 114.3 mm | |
30 mm | 50.8 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
Warranty | 1 Year Limited | N/A |
Compatibility & Controls(2) | ||
Switch Type | Self-locking Lever | Variable Trigger |
Tool Type | Straight Air Die Grinder | Right Angle |
Performance(1) | ||
No-Load Speed (RPM) | 27000 RPM | 15000 RPM |
Dimensions(3) | ||
Overall Length (mm) | 168 mm | 190.5 mm |
Overall Width (mm) | 150 mm | 114.3 mm |
Overall Height (mm) | 30 mm | 50.8 mm |
Power & Air(1) | ||
Power Source | Pneumatic | Cordless |
Ergonomics & Build(1) | ||
Weight (kg) | 0.64 kg | 0.54 kg |


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

No direct quotes from professional reviewers or editors appear in the results. Product pages emphasize reliability and power, positioning the tool as a robust option for professional tasks like weld grinding and deburring.
Results contain no consumer reviews, ratings details, or feedback summaries. Retail sites show placeholders for ratings but no extracted praise or complaints from everyday users.

Professional reviewers and editors highlight the Bosch GWG12V-20SN as a powerful, ultra-compact tool ideal for pros needing precision without bulk. It is praised for its ergonomic grip that minimizes fatigue and its brushless motor that enhances efficiency. Reviewers note that it feels comparable to air tools in terms of speed and material removal, making it a favorite for carpenters and automotive technicians who require cordless versatility.
Everyday users and video reviewers praise the tool's speed and feel, noting it matches corded tools effectively. It is considered suitable for both carpenters and automotive work, with no recurring complaints noted in the limited feedback available. Users appreciate the portability and precision, though specific long-term reliability feedback is scarce due to a lack of aggregated reviews.
“powerful ultra-compact... ideal for pros needing precision without bulk; ergonomic grip minimizes fatigue; versatile for polishing to aggressive removal; brushless enhances efficiency”

“one of my favorite tools now cordless... perfect for carpenter or automotive tech; feels comparable to air tools for speed and material removal”

