External Torx, Internal Torx, External Hex, TX, Hex
Torx, AF, Imperial, SAE, Metric
5/8 ", 5 mm, 3/16 ", 25 mm, 34 mm
1-1/2, 1/4, 2-1/2, 3/8, 1/2
25.4, 9.53, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide