Newton's Cradle Steel Balance Balls Desk Physics Science Pendulum Desk Toy Hot

US $4.61

  • Hong Kong, Hong Kong
  • Jan 30th
  Features:   100% Brand New and High Quality Not only demonstrates a pendulum, but also shows the Laws  of Conservation of Momentum and Energy. Friction and damping effects are also observed. Often used as a toy to amuse people. Includes steel balls, plastic frames and base. Great gift for everyone.   Specifications:   Size: (9*7.5*9.5cm)Net weight:96g Package weight:106g Color:Wine red+Silver   Packing content:   1 x Balance Balls Desk Physics Science Pendulum Desk Toy        

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