Milwaukee Shockwave Magnetic Nut Driver is designed to deliver exceptional durability and performance for heavy-duty applications. Engineered with the most durable magnet, this impact duty magnetic nut driver securely holds screws during setup, ensuring reliable bit engagement. Crafted from heat-treated CUSTOM ALLOY76™ steel, it extended bit life by controlling hardness. The optimized SHOCK ZONE™ technology absorbs peak torque to prevent bit breakage, while the chamfered edge provides maximum screw-head engagement. Its improved hex geometry ensures fit and reduces stripping during use. Featuring color-coded bands for easy diameter selection, this nut driver is i for use with impact drivers and drill drivers, making it a versatile and dependable tool for professionals. Model Number: 49-66-4506