16PC Air Die Grinder Kit Pneumatic Rotary Tool Collet Stone Sharpen Angle Polish

Features: Heavy Duty Ball Bearings for vibration-free performance Durable precision machned and hardened steel gears Lightweight and easy to use Lever lock throttle Rear exhaust Power and performance for all your porting, weld breaking, smoothing, deburring, polishign and grinding needs Speciifications: Collet: 1/8″, 1/4″3mm, 6mm Speed: 22000rpm Air consumption: 7cfm (198L/min) Working Pressure: 90psi (6.3kg/cm?3;)