Air Random Orbital Sander, Pad Size 5 in, PSA Pad Face Type, Orbit Dia. 3/16 in, Vacuum/Non-Vacuum Vacuum, HP - Air Tools 0.28 hp, Free Speed 12,000 RPM, Variable Speed No, Body Style - Air Tools Palm, Lever Throttle, Industrial Duty, Spindle Size 5/16 In.-24, 4.5 Average CFM @ 15 Second Run Time, 18.0 CFM @ Full Load, Required Pressure 90 psi, Air Inlet 1/4 in NPT, Min. Hose Size 1/4 in, Overall Length 8 1/2 in, Rear Exhaust Type