External Torx, Internal Torx, External Hex, Hex, TX
Metric, AF, Torx, Imperial, SAE
5/8 ", 5 mm, 5.5 mm, 25 mm, 11 mm
1/4, 1, 2-1/2, 1-1/2, 3/8
19.05, 12.5, 6.35, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate