Internal Hex, External Torx, External Hex, TX, Hex
Metric, Imperial, AF, Torx, SAE
5 mm, 14 mm, 5/8 ", 25 mm, 1-1/2 "
3/8, 1/2, 3/4, 1-1/2, 2-1/2
9.53, 19.05, 25.4, 38.1, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide