TEMO T-30 3 inch (76mm) Long Torx Star 6 point Black Impact Bit Socket Auto Repair Tool 1/2 inch (12.7mm) Square Drive Impact Torx Star 6 point Socket Bit T30 The socket bit is 3-1/8" (80mm) long. 1/2" (12.7mm) Sqaure Drive with drive release holes. Drop forged black chrome moly steel (CR-MO). Industrial grade quality. Suitable for air tools and electric tools.