Features:* The accuracy and durability of this kit meets higher standards. Use them for DIY home projects or job sites.* Thanks to the magnetic design, the parts adopt a strong permanent magnet, which can fix screws firmly. Perfect spot every time.* Standard shank diameter, 6.35mm opposite side hex shank, 1/4 standard shank diameter, suitable for all kinds of pneumatic screwdrivers, electric screwdrivers and cordless screwdrivers.* Straight and concentric angles can effectively reduce the rocking phenomenon bits.* Made of durable alloy steel, high hardness, strong torsion, long-term use.* Improved anti-corrosion and better storage, the surface adopts special anti-corrosion surface treatment. Specifications:* Materials: Alloy Steel* Total Length: 50mm/1.97" (Approx.)* Shank Type: 6.35mm/1/4 inch Hex Head* Sizes: T5, T6, T7, T8, T9, T10, T15 , T20, T25, T27, T30, T40 (Optional)* Quantity: 1 Pc Package Content: 1 * Torx Screwdriver Bit Note: 1. The real color of the item may be slightly different from the pictures shown on website due to many factors such as monitor brightness and light brightness.2.Please allow slight manual measurement deviation for the data.