Torx fixing systems are used extensively by car, commercial vehicle, & domestic appliance manufacturers, & on some electrical equipment, Chrome vanadium steel socket with S2 bit, High torque, Mirror polish & chrome plated for corrosion protection, Pack in blow mould case, Contains 5 x 1/4" Drive socket (E4, E5, E6, E7, E8), 4 x 3/8" Drive socket (E10, E12, E14, E16), 13 x 5/16" Star bit with tamping (T7, T8, T9, T10, T15, T20, T25, T27, T30, T40, T45, T50, T55), 1 x Adaptor