Description:* Made of high quality S2 stainless steel, with heavy-duty hardened and hardened construction, perfectly matched with most standard tamper-proof, German star 6 point screws.* This kit includes 13pc 1/4 inch tamper-proof star bits and 1 standard T-5 star bit & AP Connector * Used in automobiles, repairs, trucks, automobiles, engines, motorcycles, interiors, dashboard, computers, cable boxes, toys, appliances, and consumer electronics, drill bits can also be used in many other protected parts.* Designed to prevent 6" 1/4" shank hex bits from being cut onto most standard sockets, screwdrivers, drill/control kits, and power tool attachments. The hole in the middle in each bit makes it tamper-proofSpecification:Material: S2 Stainless SteelColor: SilverDrive Type: HexSizes: T-6, T-7, T-8, T-9, T-10, T-15, T-20, T-25, T-27, T-30, T-35, T-40, with Storage Cover Orange Carrying CaseStorage Case Length: 6cm/2.36inchShank Diameter: 6.35mmQuantity: 14pcs/setPackage Included:14pcs T5-T40 Screwdriver SetNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.