External Torx, External Hex, Hex, TX, 6-Point
Metric, AF, Imperial, Torx, SAE
8 mm, 5/16 ", 7/16 ", 23 mm, 9 mm
1, 1-1/2, 1/4, 2-1/2, 3/8
38.1, 9.53, 19.05, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide