Description :

Watch your 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 from two liter plastic bottles , water and a colorful plastic connecting tube . Swirling water creates a funnel - shaped 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 .

Material : Plastic

Size : approx . 4 . 8x3 . 1cm / 1 . 9x1 . 2inch

Color : Color will be sent randomly ( If you buy more , you may receive the same color or multiple colors .)

Package Includes :(18 Pack)

2 Pieces Cyclone Tubes