【GRAVITY AT WORK】 When the Newton ball is transferred to the whereabouts and the weight of the small tools, you can see it with your own eyes. Throw one or two goals. You can see energy transmission in such an amazing way!

【HIGH -QUALITY MATERIAL】 Newton cradle consists of metal balls, plastic brackets and plastic bases. The nylon thread with high -quality materials instead of cheap fishing lines. Newton cradle adopts a unique assembly design, which is more stable and durable.

【EDUCATION AND DECOMPRESSION】 Balance Balls is a ball that can be used to hit other balls and swing, which is a very interesting decompression toy. Not only show the pendulum, but also the law of conservation of momentum and energy conservation. Use it in class and share the exciting physical and scientific world with your friends and your family!

【SPECIAL INTERESTING GIFTS】 PHYSIC TOYS is very suitable for decoration in the office, family and other indoor places. It can also be used as a fun creative reduction toys. It is an interesting gift for friends, family and children.

【AFTER-SALES SERVICE】 If you have any questions in the process of purchasing the product, please feel free to contact us. We will do our best to deal with it for you. At the same time, we will also provide you with a 180-day free return service. You can buy with confidence.