Internal Torx, External Hex, Hex, TX, External Torx
AF, Metric, Imperial, Torx, SAE
5.5 mm, 7 mm, 9 mm, 36 mm, 1-1/2 "
25.4, 9.53, 19.05, 12.5, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate