Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, AF, Torx, Metric, SAE
9/32 ", 1/2 ", 13/16 ", 5/8 ", 5.5 mm
1/4, 2-1/2, 1-1/2, 3/4, 3/8
38.1, 19.05, 6.35, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Oxide, Black Phosphate