Features of AMTOP Newtons Cradle Balance Ball, Art in Motion Toy with Stainless Steel Frame and Solid Wooden Base (Black, Small Size)

*Wooden Solid Base: Unlike other Cheap plastic base, this wood one is heavy and elegant, it makes this cradle sturdier, and extend your newton cradle to a longer service life. *More Durable and Rustless: With steel frame and 5pcs high polished smooth steel balance balls, which is more durable and easy to transfer and store more energy when collide. *Physics Education Toy: This Newton