External Hex, Internal Torx, Internal Hex, TX, Hex
Metric, Imperial, AF, Torx, SAE
11 mm, 13/16 ", 7/16 ", 5/8 ", 11/16 "
9.53, 19.05, 12.5, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide