Upgrade your sewing precision with these Class 15 Metal Bobbins, designed for removable bobbin cases and compatible with most standard Class 15 sewing machines. Crafted from durable metal, they provide smooth thread delivery, long-lasting performance, and reliable tension controlperfect for beginners and experienced sewists. Each pack includes 4 high-quality metal bobbins from the trusted brand Dritz, making them an ideal replacement or addition to your sewing accessories. Key Features Durable metal construction for long-lasting use Compatible with Class 15 sewing machines and removable bobbin cases Smooth thread delivery for consistent stitching results Trusted Dritz quality ideal for daily sewing, quilting & repairs Includes 4 bobbins per pack for convenience and machine readiness