Milwaukee® Shockwave™ Impact Duty™ Socket Adapters Are Engineered For Extreme Durability and Up to 10X Life. Made From Proprietary Steel and Heat Treated to Control Hardness, The Shockwave™ Impact Duty™ Socket Adapters Provide Fastening Capabilities With All Impacts. 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.