You are Buying a brand New And Factory Sealed Milwaukee SHOCKWAVE Impact Duty 1 in. T20 Torx Alloy Steel Insert Bit (15-Pack) Model #48-32-5011...... 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. The SHOCKWAVE driver bits are built to deliver extreme durability for the most demanding applications. Wear Guard Tip protects fit over the life of the bit Custom Alloy76 Steel is engineered to extend bit life Up to 50X life vs other impact bits Shockzones are optimized in both length and width per tip type for best performance across tip types. Precise Fit Custom Machined Tip prevents stripping and reduces wobble. 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 Laser etched size for easy identification Design for use with impact drivers and drill drivers Includes: (15) SHOCKWAVE 1" T20 IMPACT BIT