External Torx, External Hex, Internal Torx, TX, Hex
AF, Imperial, Torx, SAE, Metric
9/16 ", 12 mm, 3/16 ", 9 mm, 18 mm
1-1/2, 2-1/2, 1/2, 3/4, 1
38.1, 6.35, 9.53, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide