gyroscopic relaxing keyring  6 rings
Free     Thingiverse     gianfranco

gyroscopic relaxing keyring - 6 rings

A new optimized version of gyroscopic keyring with 6 rings rotating freely in any direction and inseparable !! Gently move the rings if you want to relax !!! The external diameter is 45 cm You can scale up by 5 about 475 cm or 10 about ...

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