External Torx, Internal Hex, Internal Torx, TX, Hex
AF, Imperial, Metric, Torx, SAE
7/16 ", 6 mm, 12 mm, 9/16 ", 11/16 "
38.1, 9.53, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide