49-66-4562 Milwaukee 1-7/8" Shockwave 4 Piece Magnetic Nut Driver Set Milwaukee Shockwave Impact Dutyª Magnetic Nut Drivers are engineered for extreme durability and up to 10x life. Made from proprietary steel and heat treated to control hardness, the Shockwaveª Impact Duty Magnetic Nut Drivers feature a powerful magnet allowing for a secure grip and unyielding bit engagement. The bits feature color-coded rings for quick and easy size identification and a chamfered edge to allow for fastening in tight spaces. Broadly targeting cordless users, the Shockwaveª 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.Proprietary steel and heat treat process for maximum strength and durabilityStrong magentic tip for secure grip Color-coded band for easy size identificationChamfered edge for fastening in tight spacesIncludes:(1) 1/4" x 1-7/8" Shockwave™ Magnetic Nut Driver(1) 5/16" x 1-7/8" Shockwave™ Magnetic Nut Driver (1) 3/8" x 1-7/8" Shockwave™ Magnetic Nut Driver (1) 7/16" x 1-7/8" Shockwave™ Magnetic Nut Driver