External Torx, Internal Hex, Internal Torx, Hex, TX
Imperial, Metric, AF, Torx, SAE
9/32 ", 9 mm, 7 mm, 5/16 ", 35 mm
1-1/2, 3/4, 1, 2-1/2, 1/2
6.35, 25.4, 19.05, 38.1, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide