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Feature

Set of 10 multi-colored rattleback toys
Cool toy with mysterious spin-reversal motion
Behaves in seemingly opposite ways when spun clockwise versus counter-clockwise
Excellent for physics demonstrations or as an interestting desk toy

Description

A rattleback is one of the simplest and coolest physics toys! It will behave differently when you spin it clockwise or counterclockwise. The shape of this toy is very curious and it produces an unexpected effect when you spin it. This set features 10 rattlebacks in a variety of colors. Makes for some cool desk toys or stocking stuffers