CP Pneumatic Drill, Tool/Kit: Bare Tool, 1/2 in Chuck, Keyed Chuck, 500 rpm, 1/2 hp, 25.5 to 32 cfm, 1/4 in Air Inlet, 3/8 in Minimum Hose Size, Ergonomic, 93 dBA Power/82 dBA Pressure, 4.46 in Overall Length