Air Belt Sander Industrial Duty 0.4 HP Belt Size 1/2 in W x 12 in L Free Speed 12 000 rpm 4.75 Average CFM @ 15 Second Run Time 19.0 CFM @ Full Load Required Pressure 90 psi Air Inlet 1/4 in NPT Min Hose Size 3/8 In. Overall Length 10-3/4 In. Rear Exhaust Type Variable Speed No Composite Handle Material Composite Housing Material Lever Throttle