External Torx, Internal Torx, External Hex, TX, Hex
AF, Metric, Torx, Imperial, SAE
3/16 ", 5.5 mm, 9/32 ", 11/16 ", 25 mm
1-1/2, 3/8, 1, 2-1/2, 3/4
25.4, 6.35, 19.05, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide