Square Drive:1/2"(12.7mm) Bolt Capacity:5/8"(16mm) Net Weight:5.25lbs(2.38kgs) length:7-9/16"(192mm) Avg.air cons.:3.5cfm(1001/min) air inlet:1/4" Hose Size:3/8"(9.5mm) Air Pressure:90psi(6.3kg/cm2) Max.Torque:435ft-lbs(590N-M) Free Speed:7000r.p.m.