Easily repair a broken section of chain or join chain lengths together with Mr. Chain 2-Inch Plastic Master Links. Made of lightweight yet strong high-density polyethylene, this two-piece chain extender links together Mr. Chain 2-inch plastic chains (sold separately) to create a durable, permanent connection. These bright red chain lengtheners are ideal for replacing broken chain links, connecting multiple chains together, attaching a chain to a post or stanchion, or hanging items like signs from your chain. Designed for long-lasting outdoor use, these master links are designed to snap securely in place and are made with UV-resistant plastic to prevent brittleness.