The Milwaukee Shockwave Knuckle Pivoting Bit Holder allows you to drive fasteners and drill holes in tight， difficult work areas. The innovative， compact design locks at a 0-degree or 30-degree angle and are designed for use with Milwaukee Shockwave Impact Duty 1/4 in. hex accessories. Milwaukee 30-degree knuckle set is rated to handle up to 2，000/lbs of torque in impact drivers. The Milwaukee magnetic bit holder is made from a proprietary steel， heat treated to control hardness. The Shockwave Impact Duty insert bits feature an innovatively designed geometric shock absorption zone to extend life.