The Connector Kit is 2 kits in 1. Use it to attach the Diverter to the barrel or it also allows you to add multiple containers by connecting them in series. Self sealing fittings are quick and easy. Attach and seal from the outside of the tank. You do not need inside access with special fittings. The tubing expands from 3 in. to 6-feet. Perfect for bending around corners. Add an unlimited number of barrels and tanks. Requires 1 3/16 hole. See the Rain Diverter, Spigot Kit and Spade Bit to complete the system. Made in USA.