Pencil Grinder, 1/8 in NPT Air Inlet, General, 60, 000 RPM, 0.1 hpMfr # 12R0400 18 Item Pencil Grinder Air Inlet 1 8 in NPT Duty General Free Speed 60,000 RPM HP 0. 1 hp Includes (2) Wrenches, 1 ft Overhose, Collet, Collet Guard Required Pressure 90 PSI Throttle Twist Variable Speed Yes Housing Material Composite Exhaust Type Rear Tool Weight 0. 3 lb Bearings Shielded Average CFM @ 15 Second Run Time 2. 3 CFM @ Full Load 9. 0 Collet Capacity 1 8 in Whip Hose I. D. 3 16 in Bearing Type Shielded Head Type Standard