General description The 13Pcs Torx Screwdriver Bit Set is designed for durability and versatility, featuring 13 premium S2 chrome vanadium alloy steel bits with a black phosphate coating that resists corrosion and enhances longevity. This set includes a variety of Torx sizes, making it an essential addition to any workshop or toolbox. Technical specifications Material: S2 chrome vanadium alloy steel Coating: Black phosphate for corrosion resistance Bit Length: 50mm Included Sizes: T7, T8, T9, T10, T15, T20 (2), T25 (2), T27, T30, T35, T40 Compatibility and accessories Compatible with 1/4" diameter hex drive handles Works with quick release holders and all cordless screwdrivers Includes a base storage plate Installation Easy to install and disassemble Bits will not fall off easily during use Usage Suitable for use with pneumatic screwdrivers, electric screwdrivers, and manual screwdrivers An essential tool for various heavy-duty tasks