External Torx, External Hex, Internal Torx, Hex, TX
AF, Metric, Torx, Imperial, SAE
9 mm, 18 mm, 1/2 ", 9/16 ", 30 mm
1-1/2, 1/4, 2-1/2, 1/2, 3/8
25.4, 9.53, 19.05, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Phosphatized, Oxidised, Black Phosphate, Black Oxide