Fashionclubs 4pcs/set Children DIY Assemble Solar Power Car Toy Kit Science Educational Gadget Hobby
HEYZLASS Mini Strandbeest Model Kit (Wind Power DIY-Beast) , Interesting and Creative Gift for Birthday Holiday
Pica Toys Wooden Solar and Wireless Remote Control Car Robotics Creative Engineering Circuit Science Stem Building Kit - Hybird Power For Electric Motor - DIY Experiment For Kids, Teens and Adults
Ryder made this and the green is water for the hydraulic to go up and down and the clear one is air.
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