Our ShockWave™ Impact Duty™ square bits are engineered to be the most durable, best fitting driver bits on the market. The Wear Guard Tip™ delivers increased wear resistance which protects the fit over the life of the bit. The ShockZone™ is optimized for for each tip type and length of driver bit to absorb peak torque and prevent breaking. The Custom Alloy76™ has customized steel and heat treatment per tip type to extend the life of the driver bits, providing up to 50x life vs competitive impact driver bits. The Milwaukee® ShockWave™ driver bits are built to deliver extreme durability for the most demanding applications. Milwaukee® 48-32-4670 ShockWave™ Impact Square Bits, SQ1, 3.5 in, 2 pk