Internal Torx, Internal Hex, External Hex, TX, Hex
Metric, Imperial, AF, Torx, SAE
13 mm, 9/16 ", 11/16 ", 1-1/2 ", 9 mm
25.4, 6.35, 38.1, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide