✔✔✔✔✔Welcome to our shop！✨ 💗 Sunei 💗 ✔Your happy shopping experience is our destiny! Please feel free to contact us once you have any problem! We will try our best to help you! We support 100% quality gurantee for you ! ✔All of our items are the best quality and good service please be free to choose the items as you like. .............................💗💗................................. ✔Please read before ordering. ✔ Shop Support COD; ✔Before ordering,receive coupons,enjoy more benefits ✔Shipping from China,Estimated Ship time is 1-3 days from Order received Date,normally 8--13 working days to arrive ✔Like our products, please give us a 5 star rating, 5 stars praise, chat, contact us, get coupons, more discounts ✔▶ ▶ Follow and contact us for extra discount! Hope you can enjoy your shopping trip in pecification: .............................💗💗................................. Specification: 100 Brand New and High Quality. Material: Plastic Quantity: 2pcs Size: approx. 4.9x3.2cm / 1.9x1.3inch Color: Send it at random 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 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. Package Included: 2x Cyclone Tubes Note: Please allow minor error due to manual measurement. The colors may be a little difference for the different monitor display.