Internal Torx, Internal Hex, External Hex, TX, Hex
Metric, Torx, AF, Imperial, SAE
15 mm, 7/16 ", 7 mm, 12 mm, 1-1/2 "
1, 1-1/2, 2-1/2, 1/2, 3/4
38.1, 6.35, 25.4, 12.5, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate