Tornado Toy, 5Pcs Tornado Bottle Connectors, Water Vortex Tornado Maker Tube, Tornado in a Bottle Transfer Connector for Scientific Experiment and Test

Learn a little about science and physics with the vortex connector.

It can help increase intelligence ,It is a good ideal experiment tool to explore some of the scientific properties of air and water, to stimulate people interest to physics, dynamics and potential energy.Great educational and fun experiment activity tool for school classes, homeschoolers and scouts, gift for Christmas, Birthday, and the other holiday.Made of plastic of good quality, can be applied repeatedly providing long servicing life.The surface of connectors has stripes, thus much easier for you to rotate.Suitable for most popular bottles.