2 Gallon, Double Wall Poultry Drinker, Heavy Duty Galvanized Steel Double Wall Construction, Fountain Provides Generous Supply Of Cool Water To Promote Intake For Up To 51 Poultry Or Game Chicks, Constant Water Level Maintained In Pan By Vacuum So No Floats To Get Stuck Or Replaced, Features Visible Locking Device, Roost Prevention Tip, Inner Tank Has Brass Valve With Rubber Sealing Washer For Positive Shut Off.