Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, Torx, AF, Imperial, SAE
5.5 mm, 7/16 ", 12 mm, 5/16 ", 11/16 "
1, 1-1/2, 3/8, 2-1/2, 3/4
12.5, 25.4, 19.05, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide