Features Good performance: adopt a high-precision chuck, have stable operation, a strong machine head, high output, low air consumption and a long service life. Pressure switch: the pneumatic grinder has a pressure switch, convenient and fast, does not tire after prolonged use, and is suitable for irregular grinding. With filter screen: the air inlet opening of the mill contains a filter screen to prevent dirt from entering the grinder, preventing blockages and damage. High efficiency: the pneumatic grinder has an idle speed of 10000 rpm, which greatly improves grinding and grinding efficiency. Wide application: can be used for grinding, grinding and polishing projects, suitable for wood, metal, fiberglass and other composite materials, etc. Function: 1. Good performance: adopt a high-precision chuck, have stable operation, a strong machine head, high output, low air consumption and a long service life. 2. Pressure switch: the pneumatic grinder has a pressure switch, convenient and fast, does not tire after prolonged use, and is suitable for irregular grinding. 3. With filter screen: the air inlet opening of the mill contains a filter screen to prevent dirt from entering the grinder, preventing clogging and damage. 4. High efficiency: the pneumatic grinder has an idle speed of 10000 rpm, which greatly improves grinding and grinding efficiency. 5. Wide application: can be used for grinding, grinding and polishing projects, suitable for wood, metal, fiberglass and other composite materials, etc. How to use: Inject 3-5 ml of pneumatic oil from the air intake port every day, press the switch and let it idle for a few seconds. Specification: Item Type: Air Sander Material: zinc alloy. Yaw: 0.3 mm. Idle speed: 10000 rpm</a>Inlet size: 1/4 inch Package list: 1 x compressed air sander Package List 1 x Pneumatic Sander