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

The listing, Newton's Cradle Steel Balance Balls Desk Physics Science Pendulum Desk Toy has ended.

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: 87x75x95mm(LxWxH)
Net weight:96g
Package weight:106g
Color:Wine red+Silver
Packing content:
1 x Balance Balls Desk Physics Science Pendulum Desk Toy.
Only bid on it if you agree to pay shipping fee. For shipping you have to pay $5.99. Free tracking number as listed. I can offer you 2 methods of paying:
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Shiping in 3-5 working days via Air Mail (economy shipping comes with free tracking number and can’t track online)
Delivers in 3-4 weeks.
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