Our Shockwave Impact Duty Magnetic Nut Drivers are engineered for extreme durability and up to 30x life. The Milwaukee nut drivers are made from a proprietary steel, heat treated to control hardness and feature a strong magnetic tip for a secure grip and unyielding bit engagement. The Shockwave Impact Duty accessory line is designed for use with impact drivers and drill drivers and ideal for heavy-duty impact applications, while delivering a full system solution for all your drilling and fastening needs.Find the MLW MAG NUT DR 1/4 at Ace.