Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
7/16 ", 5 mm, 9 mm, 32 mm, 10 mm
1/2, 3/4, 3/8, 1-1/2, 1/4
38.1, 25.4, 12.5, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide