Fun Track Ball No. 1 Student DIY Technology Small Production Ball Rocker Hand-assembled Model

strongFun Trackball No 1
It is a popular science education kit to exercise childrens handson ability
Cultivate childrens handson ability learn while playing and grow happily while learning Come and try it
Product Name Fun Track Ball No 1
Product material wood
Product length 200mm
Product width 70mm
Product height 165mm
Product weight about 192gstrong