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Four circles intersecting each other like the Rashkey.

This is part of a series of three puzzles, including the Quatrium (identical to the Twin Rings) and Tritium (see the separate entry).
Starting with the Quatrium the inventor made this new version with four circles. The inventor also made the stickerless version in image 2.
Printed in PETG plastic with an Ender 3
The inventor uses the pseudonym "El Cubitero".
Width: 10 mm
Diameter (of circles): 52 mm



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