Air Belt Sander General Duty 0.4 HP Belt Size 1/2 in W x 12 in L Free Speed 26 000 rpm 8.90 Average CFM @ 15 Second Run Time 17.8 CFM @ Full Load Required Pressure 90 psi Air Inlet 1/4 in NPT Min Hose Size 3/8 In. Overall Length 11-3/8 In. Rear Exhaust Type Variable Speed Yes Aluminum Handle Material Composite Housing Material Lever Throttle