Amerimax Flex-Drain 4 In. Elbow Flex-Drain Flexible Coupler 57010 Amerimax
The FLEX-Connector expands up to 21″ to connect 4″ corrugated piping, PVC, and many other 4″ pipes together. Creates any angle or turn, and expands to reach pipes that have been cut short, and is excellent repair piece for damaged sections of pipe.