VGEBY Newton's Cradle Model, DIY Science Experiment Toy Kids Physics Educational Toys

INTERACTIVE TOY:Balls to move smoothly for up to 40 seconds can help you explain your child that physical knowledge and Newton's story. EASY TO USE:DIY modeling objects, easy to assemble, battery powered, great projects for parent-child interaction. EDUCATIONAL SIGNIFICANCE:Not only demonstrates a pendulum, but also shows the Laws about conservation of Momentum and Energy. PREMIUM QUALITY:Mainly composed of good quality wooden frame, fine wire, screw ring, glass ball and so on, sturdy and to use. SATISFICATION GUARANTEE:If you are not satisfied with our product received, you can apply for unconditional return and refund within 180 days.