Air Die Grinder Straight Free Speed 18 000 rpm HP 0.9 HP Collet 1/4 In. Exhaust Front Variable Speed No Grinder Type In-Line Average CFM @ 15 Second Run Time 38.00 Handle Material Composite Min Hose Size 5/16 In. Overall Length 7-21/64 In. Required Pressure 90 psi Air Inlet 1/4 In. Bearing Type Ball Throttle Safety Lever Characteristics Applicable Collet Duty Industrial