External Hex, Internal Torx, TX, Hex, External Torx
Metric, Torx, AF, Imperial, SAE
3/16 ", 33 mm, 36 mm, 25 mm, 10 mm
2-1/2, 1-1/2, 3/4, 3/8, 1/4
9.53, 25.4, 6.35, 38.1, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide