Internal Hex, Internal Torx, External Hex, Hex, TX
Metric, AF, Torx, Imperial, SAE
5.5 mm, 11 mm, 15 mm, 7/16 ", 11/16 "
12.5, 19.05, 25.4, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide