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Newton's Balance Ball Steel Cradle Physics Science Pendulum Desk Toy Decoration Gift
Not only demonstrates a pendulum,but also shows the Laws of Conservation of Momentum and Energy.
Size : 9cm*7.5cm*9.5cm Gross weight：0.1kg
Ball : Magnetic ,1cm in diameter Color: Dark Red
1 x Newton's Cradle Balance Balls Desk Toy
Includes steel balls, plastic frames and base.
High quality ，Good Decorations , Great gift for everyone.
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