Firefly Colored Lamp Oil and Candle Dye 3-Pack | Create Yellow, Green, Red, Blue Lamp Oil | Use in Liquid, Smokeless, Odorless Paraffin Lamp Oil

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Specifications:
Material: plastic
Color: red, green, blue, yellow, purple
Length: approx. 4.8 cm/ 1.88 inches
Outer diameter: approx. 3.2 cm/ 1.27 inches
Inner diameter: approx. 2.9 cm/ 1.13 inches

Educational experimental supplies:
Good educational and fun experiment and activity for school classes, home school, scouts and any other group, stimulating kids interest to physics and study.

How to use:
Apply the cyclone tube to connect 2 bottles with approx. one third water.
Shake them for 4 to 5 times in horizontal direction.
You will see your tornado spin in the bottle.

Package includes:
15 x Cyclone Tube in 5 colors

Note:
You have to take the food-security ring off of your bottles to get these to catch the threads.

Quantity: 15 pcs of tornado connectors , and they can be applied repeatedly, enough for your common use.
Material: made of plastic; Color: red, green, blue, yellow and purple, the surface of connectors has stripes, thus much easier for you to rotate.
Educational experimental supplies: good educational and fun experiment and activity for school classes, home school, scouts and any other group, stimulating kids interest to physics and study.
Convenient for using: apply the cyclone tube to connect 2 bottles with approx. one third water, then shake them for 4 to 5 times in horizontal direction, and you will see your tornado spin in the bottle.
Note: you have to take the food-security ring off of your bottles to get these to catch the threads.

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Xntun 15 pcs Vortex Bottle Connectors for Children's Scientific Experiments and Tests Tornado Connector Cyclone Tube, 5 Colors

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