This is a box designed to store the parts from the Modular Spirograph I uploaded last month. The hinge requires either 2x M3x28 screws to assemble or 2x M3x30 screws and 2x M3 nuts. The box closure is a friction fit with an extremely satisfying click when it seals. If you printed my spirograph, this is an essential piece of kit for storage. I've had spirograph parts littering my desk for the last month and now they finally have a place to live.