A B Air Inlet: 1/4" NPT , Average CFM @ 15 Second Run Time: 2 , CFM @ Full Load: 8 , Exhaust Type: Rear , Free Speed: 12,000 rpm , Handle Material: Composite and Rubber , Housing Material: Composite , HP: 0.20 , Min. Hose Size: 3/8" , Overall Length: 5.75" , Required Pressure: 90 psi , Throttle: Lever , Tool Weight: 1.30 lb. , Variable Speed: Yes