Air Buffer Pad Size (In.) 6 to 8 Pad Size 6 to 8 In. Free Speed (RPM) 0 to 2000 Spindle Size 5/8 In.-11 Free Speed 2000 rpm 10.25 Average CFM @ 15 Second Run Time Required Pressure (PSI) 90 41.0 CFM @ Full Load Required Pressure 90 psi Air Inlet NPT (In.) 1/4 Min Hose (In.) 3/8 Air Inlet 1/4 in NPT Length (In.) 13 Min Hose Size 3/8 In. Spindle Size (In.) 5/8-11 Overall Length 13 In. Throttle Lever Composite Handle Composite Handle Material Rear Exhaust