Features Pneumatic Design: The pneumatic function of the air polisher reduces dust, improves environmental protection, does not pose an electric shock hazard, and the side exhaust keeps exhaust gas away from your stone. Excellent Performance: The air wet polishing machine has low vibration and low noise, and has excellent performance. The copper nozzle can moisten the cutting surface, prevent dust particles from rising, and protect the body from the irritation of dust. Humanized Design: Pneumatic air wet sander adopts humanized design, high hardness helical gear can ensure longer tool life, reasonable handle design, improve work comfort. Easy To Use: The air sander set includes polishing discs, hoses and connectors for ease of use. The suede sandpaper can be glued to the grinding disc, and different grit sizes of sandpaper can be selected to meet various needs. Wide Range of Applications: Wet air polishing machine is widely used, suitable for polishing and grinding of stone, and can be used for polishing of marble, granite and other stones. Specification: Working pressure: 6-8mpa Inlet size: 1/4" Weight: Approx.1638g/ 57.8oz No-load speed: 4300rpm Suitable gas pipe: 8*5mm/ 0.3*0.2in Grinding disc Dia.: 75mm/ 3in Package List: 1 * Air Polisher 1 * 1/4" Inlet connector 1 * Hose 1 * Water pipe 1 * Grinding disc Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List