These are 4-40 size steel rods that are threaded on both ends. There are 10/pkg Included in this package are two each of: 4" rods, 6" rods, 8" rods, 10" rods, and 12" rods.
These couplers thread into Du-bro steel kwik-links and are perfect for cable
controls, flying wires, and other linkage requirements. It is for 4-40 size
Kwik-links only-for the 2-56 use DUB3425.