Air Pencil Grinder General Free Speed 60 000 rpm Average CFM @ 15 Second Run Time 2.0 8.0 CFM @ Full Load 0.10 HP Rear Exhaust Type Twist Throttle Variable Speed No Min Hose Size 1/4 In. Whip Hose I.D. 1/4 In. Hose Length 60 In. Air Inlet 1/4 in NPT Overall Length 5-1/4 In. Collet Capacity 1/8 In. Required Pressure 90 psi Ball Bearings Aluminum Housing Material Tool Weight 0.6 lb.