Pendulum Ball Swing Balance Balls Physics Science Desk Stress Relief Toys for Home Office

Feature: 1. Educational science tool shows the law of conservation of momentum and the law of conservation of energy. 2. This is a very interesting decompression toy, the ball can be used to hit other balls and swing. 3. Swing balance ball is made of high?grade plastic and sturdy steel balls, it is durable. 4. Stress relief toy is Very suitable for home decoration, study and desk decoration. 5. Wrought iron pendulum balls are also a better birthday gift and children"s toy. Specification: Item Type: Pendulum Balls Material: Plastic + Wrought Iron Weight: Approx. 87g / 3.1oz Product Size: Approx. 9.1x7.6x9.5cm / 3.6x3.0x3.7in. Package List: 1 x Base1 x Bracket