Milwaukee® SHOCKWAVE™ Impact Duty™ driver bits are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, the SHOCKWAVE™ Impact Duty™ driver bits feature an innovatively designed geometric shock absorption zone to extend life. The forged tip allows for a secure grip and maximum contact eliminating stripping or slipping. Broadly targeting cordless users, the SHOCKWAVE™ impact duty accessory line is not only ideal for heavy duty impact applications, but delivers a full system solution for all the user's drilling and fastening needs. Features Optimized Shockzone™ geometry absorbs peak torque and prevents breaking. Precise Fit Custom Machined Tip™ prevents stripping and reduces wobble. Custom Alloy76™ steel maximizes resistance to wear and shock. Forged tips for maximum grip 87721