Bird B Gone offers Aluminum and Copper ferrules both in 1/16” and 3/32” gauge sizes. When choosing ferrule sizes, be sure to match the ferrule with the appropriate diameter straining wire cable used. It is important to pair Aluminum ferrules with Galvanized straining wire and Copper Ferrules with Stainless Steel straining wire. Ferrules are used to terminate straining wire cable runs in corners and other termination points. A ratchet crimp tool with the appropriate diameter opening should be used to securely crimp ferrules in place.