8PCS 1/2" DRIVE TORX STAR SOCKET SET T30-T80 High-strength chrome-molybdenum steel structure, black phosphating treatment, corrosion resistance, rust resistance. 1/2" Drive Impact torx star socket set include T30, T40, T45, T50, T55, T60, T70 and T80. The one-piece construction is more durable and can handle higher torques. Precision machined drill tips ensure precise dimensions and a precise fit. Length: 78mm / 3 inch Material: CR-MO Metric Sizes: T30, T40, T45, T50, T55, T60, T70, T80