Red5 Newton's Cradle Steel Balance Ball Pendulum Educational Physics Science(Multicolor)

Package size: 14 x 12 x 4 CMBase Size Approximately 13x 115 CMMaterial: Balls are Metal, rest of the package is plasticDraw back one or more of the balls and release The exact number of balls will sway up on the opposite side and the motion will repeat back and forth until it stopsNewton's Cradle balance ballsNote: It shows newtons law, but don't expect the balance ball to continuously move left and right, gravity is acting on it