Threadless compression coupler is used with pointed copper-bonded ground rods to connect them. It is also used when compression couplers are required around ground rod splices. The inside of coupler is tapered so ground rod compresses during installation to form an irreversible conductive connection. They are available in various legnths and sizes. They can be made from various grades of Bronze such as Aluminum Bronze and Silicon Bronze. The design of our couplers is UL compliant.