CERROPI Newton Cradle Balance Balls, Newton Pendulum with 7 Balls, Classic Newton Swing Ball, Science Physics Gadget | Desk Toys & Accessories, 70+ Sec Swingtime, Marble Base, Black
$58.99
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LONGEST SWING TIME：7 balls absolutely aligned with 50-60″ swing time after cleaning the dust of balls
We guarantee swing 50s, contact with us via youtube with keywords of cerropi
NANO TECHNOLOGY： The swing lines are made of high-impact nylon manufactured with nano technology for ultra-thin yet extremely durable oscillatory support
SPARE BALL：One extra ball is included along with a manual on replacing the wire
100% SATISFACTION GUARANTEE：Your purchase is completely covered by Amazon’s returns and refunds policy
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CERROPI Newton Cradle Balance Balls, Newton Pendulum with 7 Balls, Classic Newton Swing Ball, Science Physics Gadget | Desk Toys & Accessories, 70+ Sec Swingtime, Marble Base, Black
$58.99
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