Tamper Resistant sizes are: T7, T8, T9, T10, T15, T20, T25, T27, T30, T35, T40. The hole in the center in each bit makes it to be tamper resistance.
This set includes 12pc 1/4-inch shank tamper resistant star bits, 2 standard star bit (T5, T6) & 1 AD connector.
The 6-Lobe 1/4" shank hex bits are compatible with a variety of sockets, screwdrivers, and power tool attachments. Various sizes are suitable for automotive repairs, electronics, home appliances, toys, and consumer electronics.
Insert smoothly with precision chamfer bit ends. Sizes are stamped on bits, as well as printed on storage sleeve.
Made of high-quality CRV steel, with sturdy hardened & tempered construction, perfectly matched to standard and tamper-resistant torx/star 6-point screws.