Internal Torx, External Hex, TX, Hex, 6-Point
AF, Torx, Metric, Imperial, SAE
3/8 ", 9/16 ", 5 mm, 18 mm, 11/16 "
1-1/2, 2-1/2, 1/2, 3/8, 3/4
38.1, 19.05, 9.53, 25.4, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide