Internal Torx, External Hex, TX, Hex, 6-Point
Metric, Imperial, AF, Torx, SAE
7/16 ", 5/8 ", 7/8 ", 9/16 ", 5.5 mm
38.1, 19.05, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate