Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, Metric, AF, Imperial, SAE
5/8 ", 9/16 ", 33 mm, 34 mm, 9 mm
1-1/2, 1/4, 1, 2-1/2, 1/2
12.5, 19.05, 9.53, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate