Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, AF, Metric, Torx, SAE
11/16 ", 7 mm, 11 mm, 13 mm, 5/16 "
1-1/2, 1/4, 2-1/2, 3/8, 1/2
9.53, 25.4, 38.1, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide