Internal Torx, External Torx, External Hex, Hex, TX
AF, Imperial, Torx, SAE, Metric
5 mm, 13 mm, 11/16 ", 25 mm, 32 mm
3/4, 2-1/2, 1-1/2, 1/2, 3/8
19.05, 6.35, 38.1, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide