Air Disc Sander Product Type Air-Powered Disc Sander Included Pad Sizes 5 1/2 in Maximum Wheel Diameter 5 1/2 in Maximum Disc Speed 16 000 RPM Speed Settings Variable Abrasive Mount Type Threaded Shank Vacuum Type Non-Vacuum Horsepower 0.4 hp Duty Medium Grip Type Pistol Air Consumption 21 cfm Required Pressure 90 psi Air Inlet Size 1/4 in Air Inlet Type NPT Minimum Hose Size 3/8 in Throttle Trigger Exhaust Location Front Tool Length 6 1/8 in Arbor Hole Size 7/8 in