Milwaukee SHOCKWAVE Impact Duty sockets are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, the SHOCKWAVE Impact Duty sockets feature thin wall construction for access in tight spaces and 6 point deep wells for unyielding bit engagement. 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.