With proper torque increasing in importance as carbon components become omnipresent, Pedro's Hex Bit Set provides a 1/4-inch drive adapter, common hex sizes, and a T25 torx for the home or professional mechanic. This allows you to use a standard 1/4in drive torque wrench and ensure fasteners are installed properly ever time. For Hex bits, the set includes 2, 2. 5, 3, 4, 5, 6, and 8mm sizes. They are constructed from heat-treated steel to ensure strength and long-lasting performance. And, Pedro's backs up the Hex Bit Set with a lifetime warranty.