Diy Pulley Block Students Steam Classroom Technology Small Production Physics Science Experiment Labor-saving Model Materials

Material:Wooden Specification:173*50*188mm DIY or not:Yes Packaging:Other Whether multi-function:Yes Whether electric: No Ability to develop: hands-on brain Science toys type: physics Colour:DIY pulley set applicable age: juvenile (7-14 years old) 1:DIY science and technology small production 2:Children's toys creative science education model 3:Science experiment