Designed to fit onto the side of a Centauri Carbon, using one screw at lower left and the spool arm itself as two points of secure contact.  Uses a nice lattice-style design (a bit of a cheeky logo-based one) and raised edges for easy stylish one-time color swap.  3mf file is set up for printing on the Centauri Carbon in two-tone PLA with a filament swap at the appropriate layer.