External Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
13/16 ", 5/8 ", 34 mm, 25 mm, 28 mm
1, 3/4, 1-1/2, 2-1/2, 1/2
38.1, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide