Internal Torx, Internal Hex, External Hex, Hex, TX
AF, Torx, Metric, Imperial, SAE
7/16 ", 7/32 ", 11/16 ", 3/4 ", 9 mm
1/4, 3/4, 1, 1-1/2, 2-1/2
25.4, 9.53, 38.1, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate