MILWAUKEE® SHOCKWAVE Impact Duty™ Magnetic Nut Drivers are engineered with the most durable magnet for a secure grip and unyielding bit engagement, lasting the life of the nut driver. The magnetic nut driver securely holds fasteners for application use. Made from CUSTOM ALLOY76™ heat-treated steel to control hardness and extend bit life. The optimized SHOCK ZONE™ absorbs peak torque and prevents breaking. Milwaukee Magnetic Nut Drivers feature a chamfered edge for maximum fastener engagement, while the improved hex geometry provides the best fit and reduced stripping during use. The nut drivers also have color-coded bands for easy size identification. Designed for use with impact drivers and drill drivers.