
Ingersoll Rand 308B
Score: 78/100
Makita DGD800Z
Score: 85/100Rankings

The Makita DGD800Z is a compact, cordless 18V LXT die grinder designed for precision metalworking tasks in confined spaces. It features a long-nose stepped-neck design and a high no-load speed of 25,000 RPM, though it lacks variable speed control. It is best suited for professional fabricators and welders needing cordless precision in tight areas.

The Ingersoll Rand 308B is a lightweight, straight air die grinder designed for precision tasks, featuring a 0.33 HP motor that delivers 25,000 RPM. Its high noise level and significant air consumption are the main drawbacks. It is best suited for professional welders and fabricators needing precision in confined areas where right-angle tools cannot reach.
| Attribute | ![]() | ![]() |
|---|---|---|
25,000 RPMbest | 25,000 RPMbest | |
| ↓ lower better | 28 CFMbest | — |
| ↓ lower better | 103 dBbest | — |
| ↓ lower better | — | 6.5 m/s²best |
| ↓ lower better | 0.46 kgbest | 1.7 kg |
174 mm | 402 mmbest | |
246 Wbest | — | |
100 mmbest | 82 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
Warranty | 1 Year | |
Compatibility & Controls(3) | ||
Collet Size | 1/4 inch, 6 mm | 6 mm |
Switch Type | Safety Lock Lever | |
Tool Type | Straight | Die Grinder |
Dimensions(3) | ||
Overall Length (mm) | 174 mm | 402 mm |
Overall Width (mm) | 100 mm | 82 mm |
Overall Height (mm) | 202 mm | 118 mm |
Power & Air(1) | ||
Power Source | Pneumatic | Cordless |
Ergonomics & Build(3) | ||
Weight (kg) | 0.46 kg | 1.7 kg |
Handle Type | Straight | Ergonomic |
Housing Material | Composite | Aluminum |


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

Professional sources praise the 308B for its powerful 0.33 HP motor and 25,000 RPM speed housed in a compact 6.85-inch body, calling it ideal for industrial-duty tasks with superior ergonomics and long-lasting construction.
Search results lack extensive user reviews, but available notes emphasize praise for its lightweight feel, maneuverability, and consistent power in everyday shop use like de-burring and polishing.

Professional reviewers praise the Makita DGD800Z for its impressive power-to-weight ratio and superior ergonomics, calling it a game-changer for fabrication shops and weld cleanup. Editors highlight the torque limiter as a standout safety feature and note the tool's excellent integration with the LXT battery ecosystem.
Everyday users generally praise the tool for its ability to cut through metal quickly and its lightweight, balanced feel. However, recurring complaints focus on rapid battery consumption during heavy use, the collet loosening under torque, and vibration buildup after extended periods of operation.
“Cuts through metal like butter-25k RPM is no joke for the size”

“Battery swaps make it perfect for fieldwork; lightweight at 2 kg loaded”

“Collet loosens under torque; requires frequent tightening”


