Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Metric, Torx, AF, SAE
6 mm, 9/32 ", 5.5 mm, 3/16 ", 7 mm
9.53, 19.05, 25.4, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide