Internal Torx, Internal Hex, External Hex, TX, Hex
Metric, AF, Torx, Imperial, SAE
9 mm, 25 mm, 29 mm, 30 mm, 1-1/2 "
1/4, 3/8, 2-1/2, 1/2, 3/4
19.05, 12.5, 25.4, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide