Escalator Science Small Production Escalator Toy Conveyor Belt Technology Elevator Diy Manual Experimental Materials

Material:Wooden Specification:335*60mm DIY or not:Yes Packaging:Other Whether multi-function: Yes Whether electric: Yes Ability to develop: hands-on brain Science toys type: physics Colour: electric escalator applicable age: juvenile (7-14 years old) 3:Science experiments 1:DIY science and technology small production 2:Children's toys creative science teaching model