External Hex, Hex, TX, External Torx, 6-Point
Metric, Torx, AF, Imperial, SAE
13 mm, 3/16 ", 5.5 mm, 7/16 ", 29 mm
1-1/2, 2-1/2, 3/4, 3/8, 1
38.1, 25.4, 19.05, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide