Capri Tools 30083 Torque Limiting Extension Bar Set (5 Piece), 65-140 ft. lbs., 1/2 in. Drive Use these torque extension bars with an impact wrench to ensure consistently accurate torque for your fasteners Five 1/2-in extension bars, made of chrome-molybdenum steel, 8-in long Color coded torque extension bars: 65, 80, 100, 120, 140 ft-lbs (90, 110, 135, 160, 190 nm) Includes carrying/storage case Comes with a lifetime warranty