Specifications - Model Number IR-2940B1 Duty Super Drive Size in 1 " Drive Description #5 Spline Handle Type End Grip Maximum Torque ft. lb 2000 Torque Range (Soft Draw) ft. lb 250 -1600 Weight lb. 22 lbs. Length in 12.40 " Recommended Hose Size in. 3/4 " Air Inlet Size (NPT) in 1/2 " Description: Ingersoll - Rand Impact Wrench Rebuilt Model: IR-2940B1 Inside trigger Steel hammer case Built in lubricator Built in power regulator Patented twin hammer impact mechanism