Features and Benefits:�Wear Guard Tip protects fit over the life of the bit�Optimized Shockzone absorbs peak torque and prevents breaking�Custom Alloy76 Steel is engineered to extend bit life�Precise Fit Custom Machined Tip prevents stripping and reduces wobble.�Shockzones are optimized in both length and width per tip type for best performance across tip types.�Laser hardening at the tip creates an outer protective shield for improved wear resistance.�Customized geometry and heat treatment per tip type for best performance across tip types�Up to 50X Life vs other impact bits�Laser etched size for easy identificationThe MILWAUKEE SHOCKWAVE Phillips #1 3.5" Impact Duty Steel Screwdriver Bits are engineered to be the Most Durable, Best Fitting driver bits for the most demanding applications. The Phillips bits feature Wear Guard Tip for increased wear resistance which protects the fit over the life of the bit. The impact driver bits have and optimized Shockzone for each tip type and length of driver bit to absorb peak torque and prevent breaking. The Custom Alloy76 is customized and heat treated per tip type to extend the life of the driver but by up to 50X vs. competitive impact driver bits.