Air Belt Sander General Duty 0.75 HP Belt Size 1 in W x 18 in L Free Speed 22 000 rpm 13.55 Average CFM @ 15 Second Run Time 27.1 CFM @ Full Load Required Pressure 90 psi Air Inlet 1/4 in NPT Min Hose Size 3/8 In. Overall Length 13-3/8 In. Rear Exhaust Type Variable Speed Yes Aluminum Handle Material Composite Housing Material Lever Throttle