External Torx, Internal Torx, External Hex, Hex, TX
Imperial, Metric, AF, Torx, SAE
7/16 ", 9/32 ", 9/16 ", 10 mm, 11/16 "
25.4, 12.5, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide