Push Circle Gears is a gearing mechanism with three "gears" in a triangle configuration. Each "gear" is a stack of three circles. When turning, all gears turn in the same direction.
Watch the YouTube video.
Read at the Shapeways Forum.
Read more at the Non-Twisty Puzzles Forum.
Read also Reddit.
Please order a 3D-printed do-it-yourself gear kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this contraption.