Features:

High Quality: This newton's cradle is made of high grade ABS plastic, tough fishing line and sturdy metal ball, which is bright, preservative and not easy to rusty, it can be served for a long time.

Perfect Educational Toy: Not only demonstrates a pendulum, but also shows the laws about conservation of momentum and energy. Perfect educational toy to embrace the story and the mystery of science.

Desk Decoration: It is a very funny decompression toy that a ball can be used to hit other balls and swing. Perfect for decorating in the office, home and other indoor places.

Wonderful Gifts: This cradle with swinging can explain your child that physical knowledge and Newton's story, also help to explore the mysteries of the natural science, a funny gift to your friends, family and children.

How to Play: Pull back one or more of the balance balls, release them and the same number of balls will swing up on the opposite side. Size: 18CM *11.8CM*18.5 CM.