There are different of grinding available to meet your different grinding and polishing requirements Wide Application:Suitable for polishing, milling, deburring, grinding, sweat on metal products, deburring furniture and wood products Efficiency:High strength, wear-resistant, light weight, easy to use with 1 hand. The working speed of the pneumatic angled grinder can reach 20000rpm, which can greatly improve your work efficiency Recommendation: If installed improperly, air may leak. When installing, use tape to wrap thread a few times to make seal better : pneumatic angled grinder is steel. structure, light weight, long service life and low noise. Easy to store and carry, can be used for long time, Manufacturer: BOYANDM