Internal Torx, External Torx, External Hex, TX, Hex
AF, Torx, Metric, Imperial, SAE
9/16 ", 3/16 ", 5.5 mm, 13 mm, 29 mm
1/4, 2-1/2, 3/8, 1/2, 3/4
38.1, 25.4, 6.35, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide