Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Torx, AF, Metric, SAE
4 mm, 3/16 ", 7 mm, 13 mm, 10 mm
1, 3/4, 1-1/2, 2-1/2, 3/8
19.05, 25.4, 6.35, 9.53, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide