Feature: 1. Even Grinding: Eccentric dual rotation ensures smooth and even polishing effect for grinding, sanding and waxing. 2. Efficient Use: The adjustable speed can get up to 15000rpm, which enables accurate working with high efficiency. 3. Broad Utility: Used to remove solder joint and rust spot on metal product, deburring furniture, woodworking, etc. 4. Simpler Works: Single hand operation will provide you with maximum stability while minimising the work fatigue. 5. Good Material: Combining premium carbon steel, rubber and ABS materials, has great durability for long term use. Specification: Item Type: Air Sander Material: Carbon Steel + Rubber + ABS Function: Used to remove solder joints and rust spots on metal products, deburring furniture and woodworking, mould making, automotive polishing and detail work, etc. Model: OW-942 Grinding Machine No Load Speed: 15000rpm Grinding Disc Size: 2in, 3in Polishing Method: Eccentric dual rotation. Air Pressure: 90 PSI Air Consumption: 4 CFM Interface Size: 1/4in. Package List: 1 x Air Sander2 x Sanding Disc1 x Pneumatic Connector1 x Screw Driver1 x English User Manual Note: The new eccentric grinder may have a little resistance because the fit is too tight and the outer diameter of the rotor hits the cylinder bore. This happens when the air pressure is very low (generally less than 4 kg).