Chain link fence loop caps are installed on line posts and used to secure top rail, or a top tension wire to the top of a fence. Order one per line post. Do not use these if barbwire is to be installed. Pressed steel loop caps are made of galvanized steel and will not become brittle with age as do aluminum loop caps. Pressed steel loop caps are highly recommended when privacy slats are to be installed in chain link. Hot-dipped galvanized finish.