High-Speed Air Sander: Free Speed: 15,000 RPM, Air Consumption: 3 CFM, Air Inlet Port: 1/4' NPT, Air Pressure: 90 PSI. mini air sander boasts high stability, lower vibration, and reduced energy consumption, ensuring a more uniform and smooth sanding effect. It is small in size and light in weight, easy for one hand to grip and operate. Highly Precise Sanding: Comes with 36 sandpapers offering 3 grit options (80/120/240 Grit). The yellow sandpapers, with coarser grits, are perfect for removing larger surface flaws, scratches, and wear, while the green sandpapers delicately address minor surface flaws and scratches for finer sanding tasks. Optimal for Curved Surface Sanding: To tackle curved surface sanding tasks, our mini pneumatic sander provides 9 wavy foam pads (1/2/3 inches). Compared to traditional foam pads, these wavy foam pads can better adapt to various curved surfaces, even bends and irregular shapes, delivering more precise polishing results