Connect the large-sized water funnels, translucent pipes, valves, water wheel and spout in your desired configuration, and experiment with different water flows. Rotate each of the 4 rings on the openings of the 3 large valve pieces to release or block the water flow, directing it towards a desired location. Includes large suction cups to adhere the valve pieces to smooth bathtub sides. Includes 10 interchangeable pieces, instructions. Valve piece 3.2” x 3.2” x 2.3” (8.1 x 8.1 x 5.8cm). 3 years+ Benefits: • Keeps kids in the tub longer for a more thorough cleansing. • Open-ended construction play fosters creativity and experimentation. • Promote visualization, spatial thinking skills, and logical reasoning ability. • Strengthens fine motor skills. • Learn the physics of water flow. • Learn how pipes work.