Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Imperial, SAE, Metric
9 mm, 12 mm, 5/16 ", 3/4 ", 11/16 "
6.35, 25.4, 9.53, 38.1, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide