External Torx, Internal Hex, External Hex, Hex, TX
Imperial, Metric, Torx, AF, SAE
8 mm, 5/16 ", 9 mm, 25 mm, 28 mm
1, 1-1/2, 2-1/2, 1/2, 1/4
12.5, 38.1, 9.53, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide