External Hex, External Torx, Internal Torx, Hex, TX
Imperial, AF, Torx, Metric, SAE
7/16 ", 5 mm, 8 mm, 5/16 ", 10 mm
3/4, 1, 1-1/2, 2-1/2, 3/8
25.4, 19.05, 6.35, 12.5, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide