Air Disc Sander Product Type Air-Powered Disc Sander Included Pad Sizes 4 1/2 in Minimum Wheel Diameter 4 1/2 in Maximum Wheel Diameter 4 1/2 in Maximum Disc Speed 11 000 RPM Speed Settings Fixed Abrasive Mount Type Threaded Shank Vacuum Type Non-Vacuum Horsepower 1 hp Duty Heavy Grip Type Right Angle Air Consumption 41 cfm Required Pressure 90 psi Air Inlet Size 3/8 in Air Inlet Type NPT Minimum Hose Size 3/8 in Spindle Thread Size 5/8 in - 11