The MILWAUKEE® SHOCKWAVE™ Impact Duty 30° 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° or 30° angle and is designed for use with SHOCKWAVE™ Impact Duty1/4 in. hex accessories. It is rated to handle up to 2,000 in-lbs of torque in impact Driver Driver Bits . The 30° knuckle™ is engineered with Milwaukee® SHOCKWAVE™ Impact Dutytechnology which is built for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, the SHOCKWAVE™ Impact Dutyinsert Driver Bits feature an innovatively designed geometric shock absorption zone to extend life. 10 SHOCKWAVE™ Impact Dutyinsert Driver Bits are included.