Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Imperial, AF, Metric, SAE
11 mm, 15/16 ", 9/16 ", 5.5 mm, 26 mm
3/8, 1/2, 1-1/2, 3/4, 2-1/2
9.53, 19.05, 6.35, 25.4, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide