Internal Torx, Internal Hex, External Hex, Hex, TX
Metric, Imperial, Torx, AF, SAE
7/32 ", 9/32 ", 5/16 ", 5/8 ", 30 mm
3/4, 1, 3/8, 2-1/2, 1-1/2
38.1, 12.5, 6.35, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide