Never knew what this shape was or that a pin a was pulled like grenade to make the monster grow. I had to look at the Dairanger props and that's when I understood how this was supposed to look. Comes split with into parts for easy printing and assembled with 10mm x 2mm magnets. The pin will need to be glued into the smaller orb but when inserted into the larger one it is designed to snap into place to self-lock and should be easy to remove for repeated use so please enjoy.