Description The MILWAUKEE SHOCKWAVE⢠Impact Duty⢠Insert Magnetic Nut Drivers are engineered for extreme durability and up to 30x life. The insert magnetic bit tip holder is made from custom Alloy76⢠steel, heat treated to control hardness. Milwaukee insert magnetic nut drivers feature powerful magnetic tips allowing for a secure grip and unyielding bit engagement. Each bit has color-coded rings for quick and easy size identification. The SHOCKWAVE⢠Insert Magnetic Nut Drivers are designed for use with impact drivers and drill drivers for heavy-duty impact application.PRODUCT DETAILS: Custom Alloy76⢠Steel is engineered to extend life Strong magnetic tip for fastener retention Color-coded band for easy size identification Provides up to 30X life Designed for heavy-duty impact applications Insert style for use in Shockwave⢠Impact Bit Holders Designed for use with Impact Drivers and Drill Drivers Includes: 1/4", 5/16", 3/8", 7/16", 1/2"