Features and Benefits:•Exact Fit Precision Machined Bits•Through-Hardened For Maximum Durability•High Performance CRM-72 Tool Steel•Natural Finish Bit, Chrome Plated Sockets•Fits Standard 1/4" Square Drive RatchetsTorx Bit Socket 1/4" Square Drive with 1/4" Replaceable Hex Bit T10 - T30 on Rail 6 Pc