Gollnest and Kiesel

Rainbow Stair Walking Spring

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£3.95 GBP

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Rainbow Stair Walking Spring by Gollnest and Kiesel

Never ceases to fascinate!

Place the rainbow stair walking spring on the top step, give it a push and then watch it walk down to the bottom step.

The principle becomes clear and should encourage further experiments.

Size: 7.5cm