This "tool" is a container/organizer for all the wooden strips from a kit's original box. I've taken 9 cores from aluminum foil rolls and placed them in a 4" diameter mailing tube with the bottom closed up. Using the kit's parts list, I label the cores, then I separate the strips and place them in the corresponding cores. This keeps me from searching for, and measuring odd strips every time I need to ID and pick a particular strip.