Milwaukee®'s 30 deg Knuckle™ pivoting bit holder allows users to drive fasteners and drill holes in tight, difficult work areas. Its innovative, compact design locks at a 0 deg or 30 deg angle and is designed for use with Shockwave™ Impact-duty™ 1/4 in hex accessories. It is rated to handle up to 2000 in/lb of torque in impact drivers. The 30 deg Knuckle™ is engineered with Milwaukee® Shockwave™ Impact-duty™ technology which is built for extreme durability and up to 10X life. Made from proprietary steel and heat-treated to control hardness, the Shockwave™ Impact-duty™ insert bits feature an innovatively designed geometric shock absorption zone to extend life. 10 Shockwave™ Impact-duty™ insert bits are included.