Air Disc Sander Product Type Air-Powered Disc Sander Included Pad Sizes 3 in Minimum Wheel Diameter 3 in Maximum Wheel Diameter 3 in Maximum Disc Speed 15 000 RPM Speed Settings Fixed Abrasive Mount Type Threaded Shank Vacuum Type Central Vacuum Horsepower 0.4 hp Duty Heavy Grip Type Right Angle Air Consumption 21 cfm Required Pressure 90 psi Air Inlet Size 1/4 in Air Inlet Type NPT Minimum Hose Size 1/4 in Spindle Thread Size 1/4 in - 20 Dust Collection Type Included Shroud