Kit to attach 5/16" tubing to a gravity waterdrainage tank for the GQF ADCUP system. Connector w/ 5/16" hose barb & 3/8" pipe threads;2 plastic nuts w/ 3/8" pipe threads. Requires 11/16" hole in the water tank. Customermust be able to drill hole. Cust may have to usesilicone gel to prevent leaking at insertion site. Tank & tubing NOT included.