Keep your sewing projects running smoothly with these Class 15 Plastic Bobbins, specially designed for sewing machines with removable bobbin cases. Made from lightweight, durable plastic, they ensure consistent thread flow and reliable tension control for clean, even stitches. This 10-pack Bonus Pack from Dritz offers excellent value for sewists who need extra bobbins on hand for multiple thread colors or frequent sewing. Key Features Lightweight plastic bobbins ideal for smooth thread delivery Compatible with Class 15 sewing machines and removable bobbin cases Bonus 10-pack for added convenience and color organization Reliable tension control for consistent stitching results Quality by Dritz, trusted in sewing accessories