Feature:1. High Efficiency: The no load speed can get to 12000rpm, which will work together with the 12mm chassis for high efficiency.2. Adjustable Speed: Flexible stepless speed regulation adds more convenience to your grinding, sanding polishing and so on.3. Reliable Working: Exhaust vent enables continuous heat dissipation and reduces the working noise as well, very reliable.4. Wide Application: Allows for extensive application in car beauty, wood polishing, rust removal, sheet metal polishing, etc.5. Easy Replacement: Comes with hook and loop fastener, it's much easier to change the sandpaper on chassis.Specification:Item Type: Orbital SanderProduct Material: ABSNo Load Speed: 12000rpmAir Consumption: 0.34m³/minChassis Thread Interface: M8Chassis 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 Sander1 x Base Chassis1 x Special WrenchNote: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.