Internal Torx, External Hex, Internal Hex, Hex, TX
Torx, Metric, AF, Imperial, SAE
13/16 ", 5/16 ", 5/8 ", 11/16 ", 11 mm
1, 3/8, 2-1/2, 1-1/2, 1/2
9.53, 12.5, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide