Milwaukee Shockwave Impact Duty driver bits are engineered to be the most durable, best fitting driver bits on the market. The optimized Shock Zone geometry is unique for each tip type to provide up to 30X longer life and absorbs 3X more torque versus other impact bits. The Precise Fit Custom Machined Tip prevents stripping and reduces wobble while the Custom Alloy 76 Steel and proprietary heat treat process maximizes resistance to wear and shock. Shockwave driver bits are built to deliver extreme durability for the most demanding applications. 20 Pack.