Internal Hex, Internal Torx, External Hex, Hex, TX
Imperial, AF, Torx, Metric, SAE
17 mm, 9 mm, 34 mm, 35 mm, 25 mm
1-1/2, 3/4, 2-1/2, 1/2, 1/4
19.05, 6.35, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide