External Torx, Internal Torx, External Hex, TX, Hex
Imperial, Torx, AF, Metric, SAE
7/32 ", 9 mm, 9/16 ", 23 mm, 1-1/2 "
1-1/2, 3/4, 1, 1/2, 2-1/2
12.5, 6.35, 19.05, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide