A Round Elbow 22 HEX X 16 used to make turns in runs of round pipe and flexible duct through 90°. They have a sturdy galvanized steel construction and are simple to adjust. They are also crimped on one end to easily fit into a pipe or other fitting of the same diameter. The elbow is the same as the pipe elbow mentioned above, but the diameter is shorter. The Round Elbow 22 HEX X 16 is made for use in various places.