External Hex, Internal Hex, Internal Torx, TX, Hex
Imperial, AF, Torx, Metric, SAE
11/16 ", 13/16 ", 7/8 ", 5/8 ", 1-1/2 "
1/4, 2-1/2, 1-1/2, 1/2, 3/8
25.4, 6.35, 19.05, 9.53, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide