The rain barrel connector Kit has dual purposes. Use it to attach the rain diverter to the barrel or use it to add additional rain barrels or containers by connecting them with the connector kit. The self-sealing fittings are easy to install from the outside of the container-no need for access to the interior or special fittings. The included white rain barrel hose expands from 20 inch to 6 feet, perfect for any distance or bending around corners. Add an unlimited number of barrels or tanks, using a connector kit for each connection. The kit includes everything required to connect another rain barrel to the existing Rain Reserve system. Once the first barrel or container fills, the next automatically begins to fill. Daisy chain as many barrels or containers as needed for storing large volumes of water. If you are adding a barrel to your system, we recommend purchasing the spigot kit for easy water access on your barrel. Requires a 1-1/2 inch hole saw. All products are produced in the United States using sustainable materials and practices.