Internal Hex, Internal Torx, External Hex, Hex, TX
Imperial, Torx, AF, Metric, SAE
9/32 ", 7/8 ", 25 mm, 23 mm, 11/16 "
25.4, 6.35, 9.53, 19.05, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide