Features: 1.Newton’s Cradle is perfect for desk decor when it comes to finding exquisite quality products to make your desk more appealing and enjoyable. And also help to relieve some stress by taking time to watch Newton’s Cradle in Action. 2.This newton's cradle is made of high quality material , which is bright, preservative and not easy to rusty, it can be served for a long time. 3.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. 4.This balance swinging ball can move smoothly. 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. 5.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. Material: metal + plastic Color:Red,Black Size:85x70x90mm Weight:100g Note： Due to manual measure, please allow 1-3cm deviation Actual item may be slightly different from the image due to monitor and ligth effect Package List: 1XOrnaments