The Rain Wizard 50 connector kit is your tool for expanding the capacity of your Rain Wizard 50 collection system. Though some people are able to buy multiple barrels that hook up to separate downspouts at their home, others may have obstructions that remove that option or make it difficult to work around. That's why we've designed our barrels to be linkable. This way when one rain barrel is full, it will overflow into the rain barrel next to it. Setup can be done quickly and just requires a screwdriver for the clamps and a drill with a 1/4"-3/8" bit. When positioning the rain barrels be sure to have the primary barrel (the one at the downspout) level if not higher than the secondary barrels. This ensures that water will flow out through the connector hose and into the second barrel. The higher the first barrel than the second, the more water pressure into the second barrel and reduced waste in overflow. For cases where you have 3 or more, you would need to continue this cascade pattern so the water literally flows down to the next barrels. The primary barrel is usually on a stand or cinder blocks to achieve the extra height needed.