1、MULTI PURPOSE: This pneumatic grinder can be used for local polishing, removing welding points and rust spots on metal products, removing burrs on wooden products, car surface polishing, etc. 2、LOW NOISE: The air sander grinder is equipped with noise reduction device and can ensure low vibration and noise during operation. 3、ALLOY STEEL MADE: Air angle grinder is made of alloy steel, with high strength, hard to wear, impact resistant, ensuring a longer service life. 4、ERGONOMIC DESIGN: The pneumatic polishing machine adopts ergonomic design, making it comfortable to hold and very suitable for long term project work. 5、COMPACT AND LIGHT: Industrial grade air grinder has a small size, light weight, easy to carry and operate, long hours of work will not tire you. 1 x Air Angle Grinder1 x Air Inlet Connector1 x User Manual Item Type: Air Angle GrinderMaterial: Alloy SteelModel: KP 6821Chassis Diameter: Approx. 31mm / 1-1/4inSwing Diameter: Approx. 3mm / 0.12inFree Speed: 8500rpmWorking Pressure: 0.5- 0.7MpaInlet Connector: 1/4in PT