The parts can be added to any type of enclosure for filament storage. The rod that i used is for a 10mm threaded rod. The back-plates fit on the other sides of the mounts so that the screws do not pull through the enclosure sides, therefore optional. Secured all parts with M3 nuts and bolts. NB!! Place the filament guides so that when the extrude pulls on the filament, that i does not put to much strain on the filament.