External Torx, Internal Hex, Internal Torx, TX, Hex
Torx, AF, Imperial, Metric, SAE
12 mm, 5.5 mm, 7/16 ", 11/16 ", 23 mm
1/4, 3/8, 2-1/2, 1-1/2, 1/2
38.1, 25.4, 19.05, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide