This set of 9 impact Star bit sockets is designed to work with Torx products and is made from high-quality Chromium Molybdenum material. The set includes nine different sizes, ranging from T20 to T55, and is compatible with a 3/8" drive. Each bit has a length of 40mm and has undergone heat treatment to ensure optimal durability and strength. Additionally, the protective black phosphate finish provides resistance against corrosion and wear.   Specifications: • Sizes: T20, T25, T27, T30, T40, T45, T47, T50 and T55 • Drive: 3/8" • Length: 40mm • Chromium Molybdenum • Heat treated • Protective black phosphate finish • Supplied on storage rail