Feature:1. Muffler Exhaust Hole: Muffler exhaust hole, reduce noise, continuous heat dissipation, fast heat dissipation, reduce machine heat, continuous work does not burn hands.2. Change Sandpaper in 1 Second: Change the sandpaper in 1 second, easy to replace, high effect, hook and loop fastener base, sandpaper suede paste.3. Stepless Speed Regulation: Stepless speed regulation, adjust according to your own work needs, large intake, high work efficiency.4. Wide Uses: Pneumatic polishing machine is suitable for car beauty, wood polishing, rust removal, sheet metal polishing.5. Convenient Operation: This is a pneumatic grinder that is convenient to operate, effortless and labor saving, and feels comfortable.Specification:Item Type: Pneumatic SanderMaterial: Aluminum AlloyNon 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 Pneumatic Grinder 1 x Base 1 x Special Wrench Note:1. Clean and dry compressed is necessary. Please remove the oil and moisture from the compressor.2. Method of removing oil and water from compressor: Accuracy filter can be installed3. The appropriate pressure is 6‑8kg/cm. If the pressure is too high, will shorten the service life and cause malfunctions.4.Please note that the plush tray color of this product will be sent randomly, please make sure you don't mind before ordering.