External Torx, Internal Hex, External Hex, Hex, TX
Imperial, AF, Torx, Metric, SAE
7 mm, 9/16 ", 11/16 ", 25 mm, 1-1/2 "
3/4, 1-1/2, 2-1/2, 1/4, 3/8
38.1, 6.35, 25.4, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide