Milwaukee Shockwave impact duty magnetic nut drivers are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat-treated to control hardness, The Shockwave impact duty magnetic nut drivers 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. The product is manufactured in china.