Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, Imperial, AF, Torx, SAE
7/8 ", 3/16 ", 5/16 ", 9 mm, 33 mm
9.53, 38.1, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide