Internal Hex, External Torx, External Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
10 mm, 18 mm, 11/16 ", 35 mm, 29 mm
19.05, 12.5, 38.1, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide