
AirCat 6255
Score: 78/100
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 AirCat 6255 is a pneumatic angle die grinder featuring a composite housing and patented quiet technology, designed for high-speed blending and deburring in confined spaces. It operates at 20,000 RPM with a feather trigger for precise speed control. It is best suited for noise-sensitive environments and precision work where compact size is critical.
| Attribute | ![]() | ![]() |
|---|---|---|
20,000 RPMbest | 15,000 RPM | |
| ↓ lower better | 9.5 CFMbest | — |
| ↓ lower better | 82 dBbest | — |
| ↓ lower better | 4.5 m/s²best | — |
| ↓ lower better | 0.54 kgbest | 0.54 kgbest |
177.8 mm | 190.5 mmbest | |
0.4 Wbest | — | |
38.1 mm | 114.3 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
Warranty | 2 Years | N/A |
Compatibility & Controls(3) | ||
Collet Size | 1/4 | 1/4" |
Switch Type | Feather Trigger | Variable Trigger |
Tool Type | Angle | Right Angle |
Performance(1) | ||
No-Load Speed (RPM) | 20000 RPM | 15000 RPM |
Dimensions(3) | ||
Overall Length (mm) | 177.8 mm | 190.5 mm |
Overall Width (mm) | 38.1 mm | 114.3 mm |
Overall Height (mm) | 78.74 mm | 50.8 mm |
Power & Air(1) | ||
Power Source | Pneumatic | Cordless |
Ergonomics & Build(1) | ||
Handle Type | Feather Trigger | Right Angle |


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

The search results provided do not contain detailed professional reviews or expert evaluations from industry publications or testing organizations. The available information is primarily product specification sheets and retail listings.
The search results do not include user reviews, consumer feedback, or common complaints about the AirCat 6255. While the tool is marketed with positive features like quiet operation and ergonomic design, specific user testimonials or recurring praise or complaints are not available in these sources.

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”

