Description: Look at your vortex run in the bottle This is an excellent educational and fun experience and Activity for school classes, homeschoolers, scouts and any other group. Create a tornado from two Plastic bottles of 2 liters, water and a colorful plastic connection tube. Swirling water creates a shape of funnel Vortex while it flows from one bottle to another. You can create different ways to work with it by timing Emptying water, using pieces of paper or food coloring or lamp oil. Material: Plastic Size: 3.7 cm x 4.9 cm (diameter x height). Quantity: 1 piece & nbsp; Note: Transition: 1 cm = 10 mm = 0.39 inches Please allow an error of 12 cm due to manual measurement. Please make sure that you don’t bother you before bidding. The package includes: 1pcs x cyclone tube (plastic bottle not included)
