Internal Torx, External Hex, TX, Hex, External Torx
Metric, AF, Imperial, Torx, SAE
13 mm, 9 mm, 3/8 ", 9/16 ", 26 mm
1/4, 2-1/2, 1/2, 1-1/2, 3/8
25.4, 12.5, 19.05, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate