this is a 4 inch pikachu pokemon inspired pokeball. i designed this ball myself and is not a copy of anyone elses. The ball is fully functional and can be scaled larger to be a 6 inch ball. The design does come with a pin to insert between the two halves but I highly recommend using a nail or a metal dowel to go between the ball hinge. I also highly recommend using PETG filament on the inside halves due to how brittle PLA filament is. Its pretty straight forward on assembly, if you have any questions please message me here. This is not for resale, you may sell prints but not the file. I own the rights to the file and I am the original modeler.