Oasis Bucketmaster Float Valve Assembly with Garden Hose Adapter Rugged, compact and inexpensive mini float valve turns a 5 gallon bukcet into a self-filling reservior Great for chicken waterers and much more Simply drill a 7/8" hole in your tank and snug down the bulkhead fitting Tighten on the garden hose adapter, included Connect to an ordinary garden hose and your reservior is ready to go, fine-tune the refil level with the adjustable float arm