Spherigear Transmission is an experimental gearing mechanism that uses spherical gears, a.k.a. spherigears. The mechanism can be folded by 180 degrees in both directions, while maintaining the engagement of the spherigears. As usual with Oskar's gearing mechanism, also this one has no obvious application.
Watch the YouTube video.
Read at the Shapeways Forum.
See also Reddit.
Read more at the Non-Twisty Puzzles Forum.
Please order a 3D-printed do-it-yourself spherigear kit from Shapeways at this page (check with Oskar about screws), or contact Oskar directly if you are interested in obtaining a fully colored and assembled sample of this gearing contraption.