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Tetralock is a laser cut gear puzzle where you match numbered teeth to numbered cogs. Three solutions are known to be possible based on the three 4-face paths around the tetrahedron.
It is an innovative and unique puzzle. Be careful not to lock the gears! Easy to unlock, just reverse a step or two.

Object Match numbered teeth to numbered cogs.
Difficulty Level 7 – Challenging
Brand Puzzleatomik
Types More Wood Puzzles, Doug Engel
Dimensions 9 cm x 9 cm x 8 cm / 3.5 in x 3.2 in x 3.2 in
Packaging Cardboard Box