Feature:1. Excellent educational science tool, showing the pendulum, 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. Made of high‑grade plastic and sturdy steel balls, durable and reliable, you can use it for a long time.4. Suitable for home decoration, study room and desk decoration, because it looks beautiful and fashionable.5. It is also a perfect birthday gift and children's toy, your friends and kids would love it.Specification:Condition: 100% Brand New Item Type: Balance BallsMaterial: Plastic + Steel BallColor: As Pictures Shown Size: Approx.17.8 x 14.8 x 18cm / 7 x 5.8 x 7.1inFeatures: Excellent educational scientific tools, showing the pendulum, the law of conservation of momentum and the law of conservation of energy.Package List:1 x Base1 x Bracket
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