McKay Multifunction 13 Pc, Star 6 Point, Security Tamper Proof, Torx Driver Bit Set- Securely screws onto most &frac14;" Screwdrivers Sockets & Power Tool Shanks VARIETY SIZES, MULTIFUNCTION, SECURITY Tamper Resistant 6 Point Star Torx Bit Set; Set Contains T4- 1.28 mm, T5- 1.42 mm, T6- 1.70 mm, T7- 1.99 mm, T8- 2.31 mm, T9- 2.50 mm, T10- 2.74 mm, T15- 3.27 mm, T20- 3.86 mm, T25- 4.43 mm, T27- 4.99 mm, T30- 5.52 mm, T40- 6.65 mm. 1" LENGTH, HOLDER SLEEVE, 1/4" shank hex bits in sizes clicks onto most standard sockets, screwdrivers, drill/driver kits & Power tools attachments. The whole in the center in each bit causes it to be tamper resistance. IDENTICAL MATCH FOR MOST STANDARD TAMPER RESISTANCE German Makes Star 6 Point. Also accessible to many other protected components. STURDY HARDENED & TEMPERED CONSTRUCTION: Made with High Grade S2 Steel Material for a long lasting existence. Molded red plastic bit holder included. Made in Taiwan. INTENDED USES: Commonly used for Body & Trim pieces, interior frames and electrical sensors.