External Torx, Internal Torx, External Hex, Hex, TX
Torx, Metric, AF, Imperial, SAE
5 mm, 7/16 ", 9/16 ", 9 mm, 1-1/2 "
12.5, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide