Tornado in A Bottle, 10Pcs Tornado Tube Bottle Connector Plastic Water Vortex Maker Cyclone Tube Toy for Scientific Experiment and Test, 5 Colors (Random)

Key features

• Material: Made of plastic, the surface of connectors has stripes, thus much easier for you to rotate, can be applied repeatedly, common size for most bottles (such as Coke bottles), better than other connectors.
• Use: Use a connector to connect a bottle with about 1/3 of water and an empty bottle, shake the bottle horizontally 4-5 times, then you will see the vortex in the bottle rotate. You can put coloring or washing powder is added to the water in the bottle, so that the little tornado you create has different colors and bubbles, which is more interesting.
• Dimension: The connector is 4.8 cm/ 1.9 inches in length, 3.3 cm/ 1.3 inches in outer diameter and 2.8 cm/ 1.1 inches in inner diameter, could fit most of bottles.
• Education Tool: It is a great educational and fun experiment activity tool for school classes, homeschoolers and scouts. It can help stimulate their interest to physics, dynamics and potential energy.
• You can put coloring or washing powder is added to the water in the bottle, so that the little tornado you create has different colors and bubbles, which is more interesting.