I designed this as a replacement spool, bobbin, or casing for ribbon, thread or any assorted string. I also added a larger version that needs printed on 2 plates. the original is about 3 and ¼ in wide by half in thick with no hole in the center. the large version is about 6 ½ in wide and an inch thick with a small hole in the center. I use one for ribbon and one for large spools of bias tape. i also added in small slits along one side to tuck the end of the ribbon into.