This handy, pliable square organizing tray is a cousin to the original Bobbin Saver. At 5 1/2" x 5 1/2" x 3/4", it holds all your bobbins for when they are needed! Bobbin Saver 2, for small or large, metal or plastic bobbins. Bobbin threads won't tangle or unwind. Bobbin Saver 2 by Grabbit Sewing Tools. Holds up to 66 bobbins.