Lisle Master Tamper Resistant Torx® Bit Set Ten hex insert bits with two bit holders. Seven smallest bits are used with the 1/4 bit holder. Three largest bits are used with the 3/8 bit holder. All twelve pieces come in a convenient vinyl holder. Includes: T-10, T-15, T-20, T-25, T-27, T-30, T-40, T-45, T-50, T-55 Tamper Resistant Torx® bits 1/4, 3/8 bit holders