External Torx, Internal Hex, External Hex, TX, Hex
AF, Metric, Imperial, Torx, SAE
9/32 ", 5 mm, 9/16 ", 7/16 ", 11/16 "
1/2, 3/4, 1, 2-1/2, 1-1/2
38.1, 25.4, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate