Break back style wrenches provide a large break angle, to prevent the possibility of over-torquing Chrome molybdenum ratchet gear and fully heat-treated handle Ideal for noisy and difficult working conditions Comes in blow-molded storage case with instructions 3/4" square drive 150-600 ft.-lbs. 200-800 Nm 3/4" Break Back Length: 49.21" Torque Accuracy: ± 4% Weight: 29.90 lbs.