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 when setting the application, providing unyielding bit engagement. Made from heat-treated CUSTOM ALLOY76™ steel to control hardness and extend bit life. The optimized SHOCK ZONE™ absorbs peak torque and prevents bit breakage. Milwaukee Magnetic Nut Drivers feature a chamfered edge for maximum engagement of the screw head, while the improved hex geometry allows for the best fit and reduced stripping during use. The nut drivers also feature color-coded bands that make it easy to select the correct diameter. Designed for use with impact drivers and drills.