bits made of premium alloy steel for superior hardness that reduce wear-outs and insure longevity TORQUE STRENGTH: high strength chrome vanadium steel sockets provide superior torque for greater turning power with mirror chrome finish for corrosion resistance PRECISION BITS: precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and both bits and fasteners from damaged edges ORGANIZED STORAGE: set includes a sturdy plastic organizing case for secure storage and easy carrying 13-Piece Torx star bit socket set includes: 1/4” Drive: T8, T10, T15, T20, T25, T27, T30; 3/8” Drive: T40, T45, T47, T50, T55; 1/2” Drive: T60 Pro-grade set in hard-to-find Torx bit and E-sockets Seven 1/4-Inch drive sockets in sizes: T-8, T-10, T-15, T-20, T-25, T-27, T-30 (37mm length) Five 3/8-Inch drive sockets: T-40, T-45, T-47, T-55 (48mm length); 1/2-Inch drive T-60 Heat-hardened Chrome-vanadium steel, mirror-chrome finish Complete in custom-fit storage and carry case You’re not just buying a product – you’re investing in peace of mind. If there are any questions or problems with our product, please feel free to contact us. We will make every effort to solve your problem. bits made of premium alloy steel for superior hardness that reduce wear-outs and insure longevity TORQUE STRENGTH: high strength chrome vanadium steel sockets provide superior torque for greater turning power with mirror chrome finish for corrosion resistance PRECISION BITS: precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and both bits and fasteners from damaged edges ORGANIZED STORAGE: set includes a sturdy plastic organizing case for secure storage and easy carrying 13-Piece Torx star bit socket set includes: 1/4” Drive: T8, T10, T15, T20, T25, T27, T30; 3/8” Drive: T40, T45, T47, T50, T55; 1/2” Drive: T60