The Milwaukee 4932459781 Shockwave Knuckle & Bit Set is Impact Rated: suitable to use with latest 18V impact drivers as well as cordless drill drivers The Milwaukee 4932459781 is an 11 Piece Shockwave Impact Duty Bit Set with 10 popular-sized Bits and a Knuckle attachment with 1/4 inch hex drive. The knuckle has been designed for use in awkward tight working conditions where access to screw heads is limited. Features: Offset attachment for heavy duty impact applications Impact rated: suitable to use with latest 18V impact drivers as well as cordless drill drivers Very compact offset attachment Ideally suited to working in confined and limited spaces Solid metal construction to absorb impact action 0° and 30° positions ¼″ Hex shank fits directly into the chuck preventing slippage Height when 30° tilted 40 mm Contains:  1 x Knuckle, 1 x PH1 / 2 x PH2, 1 x PZ1 / 2 x PZ2 / 1 x PZ3, 1 x TX15 / 1 x TX20 / 1 x TX25