Features 1、HIGH CONCENTRICITY COLLET: High accuracy collet possess high concentricity, provide stable clamping. Alloy steel material has high strength, corrosion resistant and wear resistant 2、LIGHTWEIGHT AND PORTABLE: Air die grinder has small waist lightweight body, which can work for a long time, portable without fatigue 3、LARGE TORSION AND LOW VIBRATION: This is a perfect polish tool, possess large torsion, low vibration, good feel, useful and practical 4、WIDE APPLICATION: Suitable for surface grinding, deburring, polishing, shaping and modification of metal parts, wood components, rubber tires, castings, etc. 5、TECHNICAL PARAMETERS: Chuck size for 3mm, no load speed is 30000RPM, working pressure from 0.5‑0.7Mpa Specification Item Type: Air Die Grinder Material: Alloy steel Chuck Size: Approx. 3mm / 0.12in No Load Speed: 30000RPM Recommended Air Pipe: Approx. 8 x 5mm / 0.31 x 0.2in Working Pressure: 0.5-0.7Mpa Package List 1 x Air Die Grinder 1 x Connector 2 x Wrench 1 x User Manual