External Torx, Internal Torx, External Hex, TX, Hex
Imperial, AF, SAE, Torx, Metric
7/8 ", 12 mm, 28 mm, 1-1/2 ", 11/16 "
9.53, 38.1, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide