This is a puzzle where you have to get all the same color beads/ balls on the same sides by rotating the middle 90 or 45 degrees then spinning the spheres in the oval. There are 4 colors and twelve beads for each of them. To assemble you put the skinny piece on the cylinder that is on one of the larger pieces. Then put all beads in all parts. Last put some gule into the square hole and insert the peg that is on the other block. (I have not printed this myself so I am not sure if it is fully functional).