Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, AF, Metric, Torx, SAE
9/16 ", 15/16 ", 5 mm, 15 mm, 29 mm
3/4, 1/4, 1/2, 2-1/2, 3/8
38.1, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate