The MILWAUKEE® SHOCKWAVE™ Torx #25 1" Impact Duty™ Steel Screwdriver Bits are engineered to be the Most Durable, Best Fitting driver bits for the most demanding applications. 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 a 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.