Expand water play with this early STEM set! Use the water pump and 72 open-ended attachments to create dynamic, elaborate water systems. The 12 different tubing types and accessories fit together snugly for endless creative possibilities. The set also includes 12 suction cups to keep water systems in place. This STEM set supports problem solving, fine motor skills and critical thinking as children create new water systems. Children will love observing and experimenting with the physics of water. Children will also explore descriptive language as they build and describe their creations and water movement. The plastic pump and complex tubing are high quality and durable. Children can also use household items like water bottles and scoops (not included) with their creations. For ages 5+. || Size of pump: 3.9"L x 2.4"W x 14.2"H || Size of smallest tube: 2.8"L x 1.8"dia. Recommended age 5+ years