Internal Hex, Internal Torx, External Hex, TX, Hex
Metric, Torx, Imperial, AF, SAE
9/16 ", 25 mm, 35 mm, 29 mm, 11/16 "
19.05, 12.5, 9.53, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide