Our chain link truss rods and Truss Rod Tighteners are used when braces and trusses are installed on chain link fences and gates. Bracing and trussing a chain link fence serves the purpose of keeping posts plumb, under the duress of tightly stretched chain link. Truss Rod Tighteners are also used on chain link gates and work like a turnbuckle to help keep a gate square and prevent gate sag.