External Torx, Internal Torx, External Hex, TX, Hex
Torx, AF, Imperial, Metric, SAE
3/16 ", 19 mm, 11/16 ", 3/4 ", 9 mm
1/2, 3/4, 1-1/2, 2-1/2, 3/8
12.5, 19.05, 9.53, 38.1, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide