Internal Torx, Internal Hex, External Hex, Hex, TX
AF, Metric, Imperial, Torx, SAE
7/8 ", 9/16 ", 5/16 ", 7/16 ", 11/16 "
9.53, 19.05, 25.4, 6.35, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide