Our Shockwave Impact Duty Magnetic Nut Drivers are engineered with the Most Durable Magnet to withstand heavy-duty applications throughout the life of the nut driver. The magnetic nut driver securely holds screws during application set-up providing unyielding bit engagement. The optimized Shock Zone absorbs peak torque and prevents bit breakage. Our magnetic nut drivers feature a chamfered edge for maximum screw-head engagement while the improved hex geometry allows for the best fit and reduced stripping during use. The nut drivers also feature color-coded bands that aid with selecting the right diameter.Find the MLW MAG NUT DR 1/2 at Ace.