This innovation has a clever, multi-purpose design that features a removable magnetic pin caddy with a "secret" storage compartment in its base and a tray that keeps sewing machine bobbins organized and untangled. Pins align over center groove for easy pick up. Bobbin ring holds 30 bobbins. 6.75" x 5.5" 'Magnetic Pin Cushion With Bobbin Ring' by Prym Love for Dritz. Holds 30 bobbins.