The Astro Pneumatic Tool 233 ONYX 1/8" 95° Pencil Die Grinder while lightweight for minimal fatigue also boasts high speeds adjustable up to 52,500RPM for rapid material removal. This right-angle 95° design allows access in tight spots while maintaining comfort in the hand. Specifications: Free Speed: 52,500 RPM, Collet: 1/8" (3 mm), Overall Length: 5.47" (139 mm), Net Weight: 0.485 lbs. (0.22 kgs), Hose Length: 11.8" (1300mm), Air Inlet Thread NPT: 1/4", Air Consumption: 2.7 CFM, Air Pressure: 90 PSI