External Torx, External Hex, Internal Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
9 mm, 1/4 ", 11/16 ", 25 mm, 1-1/2 "
1/4, 3/4, 1-1/2, 2-1/2, 3/8
9.53, 6.35, 25.4, 12.5, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide