External Hex, External Torx, Internal Torx, TX, Hex
Metric, Torx, AF, Imperial, SAE
8 mm, 11/16 ", 11 mm, 34 mm, 1-1/2 "
1, 2-1/2, 1-1/2, 3/8, 3/4
19.05, 38.1, 25.4, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide