The Milwaukee 6 Piece 30? 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? or 30? angle and is designed for use with MILWAUKEE? SHOCKWAVE? Impact Duty? 1/4" hex accessories. Milwaukee 30 degree knuckle set is rated to handle up to 2,000 in/lbs of torque in impact drivers. The 30? Knuckle? is engineered with SHOCKWAVE? Impact Duty? technology which is built for extreme durability and up to 30X life. The Milwaukee magnetic bit holder is made from proprietary steel, heat treated to control hardness. The SHOCKWAVE? Impact Duty? insert bits feature an innovatively designed geometric shock absorption zone to extend life.