Specification: Item Type: Orbital Sander Product Material: ABS No Load Speed: 12000rpm Air Consumption: 0.34m³/min Chassis Thread Interface: M8 Chassis Diameter: Approx. 125mm / 4.92in (there is a ±2mm error in manual measurement) Use Scenarios: For car beauty, wood polishing, rust removal, sheet metal polishing. Package List: 1 x Orbital Sander 1 x Base Chassis 1 x Special Wrench Note: 1. Clean and dry compressed air is necessary. Please remove the oil and moisture from the air compressor; 2. Method of removing oil and water from air compressor is to install accuracy filter; 3. The appropriate air pressure is 6‑8kg/cm. If the air pressure is too high, it will shorten the service life and cause malfunctions.