31890 Project Blueprint Wave Newton'S Cradle (2 pc/pack)

Made with high-quality steel and plastic, Project Blueprint Newton’s Pendulum Wave Desk Toy is engineered to engage the laws of motion. Each sculpture features a smooth black base with 15 shiny steel orbs connected to the top rod and an initiator stick. Measures 16.5 inches long with silver steel balls and frame, and a black base. To operate, use the initiator stick to push the steel balls into motion and watch as the wave patterns cycle through different phases.