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Toysmith Euler's Disk Science and Learning KitProduct FeaturesProduct DescriptionThis Toysmith Euler's Disk Science and Learning Kit creates a hypnotic display of light and sound as it rotates. It incfrom
Euler's Disc: Spinning disc goes for minutes!
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2005 Eulers Disk Spinning Science Toy By Toysmith Brand New Perfect X-mas Gift! 793631620531
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