Superlock profile 1/2" and 1/4" drive. This comprehensive Socket Set has been designed to cope with demands of the new Automotive technician and includes several innovative accessories to compliment t more→he Chrome Vanadium, matt finished standard socket set. 1/4”D SUPERLOCK SKT - 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm 1/4”D DEEP SUPERLOCK SKT - 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 30, 32mm 1/2”D SUPERLOCK SKT - 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 30, 32mm 1/2”D DEEP SUPERLOCK SKT - 14, 15, 17, 19mm STAR BITS 1/4”D - T8, T10, T15, T20, T25, T30 STAR BITS 1/2”D - T40, T45, T50,