Waterboy 4 Station Gravity Fed Manifold OnlyWaterboy 4 Station Cooler Manifold! Gravity systems are for hydrating multiple athletes from a standard 5 or 10 gallon cooler. Features: Adapts to almost any water cooler Four stations Quick release hoses for cleaning Very economical Manifold only cooler sold separate Tripod available see accessories Features a 1 year manufacturers warranty against defects.