Klein® Screwdriver Bit, Double-Ended Replacement Tamperproof, Imperial, T8/T15 point, Torx® point, 1-1/2 in OAL, Steel.These replacement bits work with Klein® 4-in-1 electronics screwdrivers. The (2) double-ended T8 and T15 tamperproof Torx® pin bits are designed for precision work. Made of the highest quality tempered steel, carefully heat treated for maximum strength and precision milled to fit screw openings securely. Klein® 13105 Screwdriver Bit, Double-Ended Replacement Tamperproof, Imperial, T8/T15 point, Torx® point, 1-1/2 in OAL