External Torx, Internal Torx, External Hex, TX, Hex
Metric, AF, Torx, Imperial, SAE
6 mm, 7 mm, 5.5 mm, 3/4 ", 29 mm
1-1/2, 1/2, 2-1/2, 3/8, 3/4
38.1, 9.53, 19.05, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide