Newton's Shot Put Cradle Steel Balance Balls Physics Science Pendulum Toys Desk Decoration Description: brand new, high quality Features: Newton pendulums are classic desk toys; It is also known as ball game pendulum, Newton's Cradle, Newton's cradle, Perpetuum mobile. Fashion, modern design, metal craft gift. Newton's Cradle is a timeless, classic desktop science "toy" that is the perfect blend of science and art, Suitable for kids to experience the fun of mechanics playing this fun device. If one of the outer stainless steel balls in the metal frame is struck against the others, the center balls seem to remain unmoved. Only the ball at the other end of the chain pushes off. If there are 2 striking balls, the center ball remains , but the two opposite balls swing out. Versatile. You can use it as a physical device, office equipment, stress killer, and as a nice gift and desk decoration, nice gift for a friend. Specifications: Item Type: Newton's Shot Put Cradle Material: Stainless steel Size: approx.11x10.7x14cm / 4.33x4.21x5.51in Color: Silver Quantity: 1 Pc Note: Transition: 1cm = 10mm = 0.39inch. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Newton's Shot Put Cradle (other accessories demo in the picture is not included.)