Bobbin Boat™ Trio by Dritz® is a three-pack of bobbin holders that keep your bobbins securely in place. The curved interior of the boat "hugs" the bobbins for a snug fit. Bobbin Boat holds 10 Style M bobbins, the bobbin size compatible with the Sailrite® Fabricator® and other industrial sewing machines. With its curved design, you can toss it in your sewing toolbox and the bobbins will stay in place. Quantity: 3