: 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. 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. Wide Application:Suitable for polishing milling deburring grinding sweat on metal products deburring furniture and wood products. There are different of grinding wheels available to meet your different grinding and polishing requirements., Manufacturer: Dcaknri