1x Tornado Vortex Bottle Water Connector Science Tube Experiment Sensory

brand new and high quality Material: Plastic Color:?Color random delivery, if you buy more than one products, which colors may be different or the same Watch your vortex spin in the bottle!!!This is a great educational and fun experiment and activity for school classes, homeschoolers, scouts and any other group. Create a tornado from two 2 liter plastic bottles, water and a colorful plastic connecting tube. Swirling water creates a funnel-shaped vortex as it drains from one bottle to another. You can create different ways to work with it by timing the water draining, using bits of paper or food coloring or lamp oil. Size: 3.3cm*4.8cm/1.30"*1.89" (Diameter*Height) Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect? the actual color?of the item. Thank you!!