External Torx, Internal Torx, Internal Hex, Hex, TX
Imperial, AF, Torx, SAE, Metric
7/32 ", 9/32 ", 7/8 ", 11 mm, 11/16 "
1/4, 2-1/2, 1-1/2, 1/2, 3/4
25.4, 38.1, 12.5, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide