JET Air Die Grinder, Super Heavy Duty, Tool/Kit: Tool, 1/4 in Collet, 18000 rpm, 0.9 hp, 6 cfm, 90 psi Air, 1/4 in NPT Air Inlet, Rear Exhaust Location, Pushbutton/Self-Locking Lever Throttle, 3/8 in Minimum Hose Size, Alloy Steel Housing, 92 dBA, 7-1/16 in L