Internal Torx, External Hex, TX, Hex, External Torx
Imperial, AF, Torx, Metric, SAE
1 ", 5 mm, 9/16 ", 11/16 ", 25 mm
1, 1-1/2, 2-1/2, 3/8, 3/4
38.1, 9.53, 19.05, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide