Air Disc Sander Product Type Air-Powered Disc Sander Included Pad Sizes 9 in Minimum Wheel Diameter Not Applicable Maximum Wheel Diameter 9 in Maximum Disc Speed 4 500 RPM Speed Settings Variable Abrasive Mount Type Arbor Vacuum Type Non-Vacuum Horsepower 1.8 hp Duty Heavy Grip Type Right Angle with Side Handle Air Consumption 50 cfm Required Pressure 90 psi Air Inlet Size 1/2 in Air Inlet Type NPT Minimum Hose Size 3/4 mm Spindle Thread Size 5/8 in - 11