A professional quality 13pc star security socket bit set. Manufactured by US.PRO Tools (formerly known as Bergen Tools), one of the more respected hand tool manufacturers on the market. The sockets are forged using Chrome Vanadium Steel (CR-V) for longevity and durability and helps resist abrasion, oxidation and corrosion. They are six sided star heads with holes, making them suitable for use with tamper proof Torx® products. The sizes and lengths are as follows: 7PC 1/4″ Drive (Length: 37mm) – T8, T10, T15, T20, T25, T27 and T30. 5PC 3/8″ Drive (Length: 48mm) – T40, T45, T50, T55 and T60. 1PC 1/2″ Drive (Length: 55mm) – T70. All supplied in a handy clip shut storage case for neat storage and easy transportation.