Air Pencil Grinder General Free Speed 60 000 rpm Average CFM @ 15 Second Run Time 2.30 9.0 CFM @ Full Load 0.10 HP Rear Exhaust Type Twist Throttle Variable Speed Yes Min Hose Size 3/16 In. Whip Hose I.D. 3/16 In. Hose Length 60 In. Air Inlet 1/4 in NPT Overall Length 5-1/2 In. Collet Capacity 1/8 In. Required Pressure 90 psi Shielded Bearings Composite Housing Material Tool Weight 0.3 lb. Includes (2) Wrenches Collet Collet Guard and 1 ft Overhose