3/8" H.D. AIR RATCHET WRENCH PLANETARY GEAR; BOLT SIZE:3/8" SPEED: 160 RPM MAX TORQUE:55 FT-LB(75 N-M) AIR PRESSURE: 90 PSI AIR CONS.:4 CFM AIR INLET:1/4";AIR HOSE:5/16" LENGTH:267MM;WEIGHT:1.13KGS ** 1/2" DR IS ALSO AVAILABLE