1/2" Twin-Hammer Air Impact Wrench Free Speed: 7.500 RPM. Maximum Torque: 420 ft.-lbs.. Working Torque: 370 to 390 ft.-lbs.. Recommended Air Pressure: 90psi. Average Air Consumption: 5 SCFM. Air Inlet Size: ¼” NPT. Recommended Air Hose Size: 3/8” ID. Tool Length: 7.3”. Tool Weight: 5.7lbs.. Twin-Hammer impact mechanism provides up to 420 ft.-lbs. of torque. Pressure feed lubrication. Steel nose case with lightweight aluminum housing. Variable power settings . ¼” NPT air line coupler included. 2112 Yes - LEAD AND LEAD COMPOUNDS