Internal Torx, External Hex, Internal Hex, Hex, TX
Imperial, Torx, AF, Metric, SAE
8 mm, 5/8 ", 11/16 ", 1-1/2 ", 9 mm
1/2, 1-1/2, 3/4, 1, 2-1/2
25.4, 9.53, 6.35, 38.1, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide