Set of 24 plastic sewing machine bobbins, 20 x 10 mm (13/16 x 3/8 inch). A practical sparebobbin pack for home sewing, classes, and small workshops. Key benefits Ready supply of spares reduces project interruptions by letting you prewind multiple colors and thread types. Uniform size and construction help maintain consistent winding and smooth thread delivery during sewing. Lightweight plastic construction resists corrosion and is easy to handle when threading and changing bobbins. Compact quantity of 24 provides a useful balance between variety and storage convenience. What this product does Holds lower thread for sewing machines that accept 20 x 10 mm bobbins (13/16 x 3/8 inch). Designed for standard winding and insertion into compatible bobbin cases or compartments. Simplifies thread management by letting you keep frequently used colors loaded and ready. Key attributes Quantity: 24 bobbins per pack. Size: 20 x 10 mm (13/16 x 3/8 inch). Material: durable plastic. Function: bobbin thread storage and delivery for compatible sewing machines. Practical uses and scenarios Home sewing repairs: Keep several bobbins prewound with matching thread colors to finish hems, fix seams, and mend garments without stopping to rewind. Sewing classes or group projects: Provide students or participants with multiple readytouse bobbins for faster setup and fewer interruptions. Quilting and craft projects: Prewind bobbins with different thread types and colors to switch quickly between piecing, applique, and topstitching. Additional notes Confirm compatibility with your sewing machine by checking that it accepts 20 x 10 mm bobbins (13/16 x 3/8 inch). Store bobbins in a small box or organizer to keep threads tangle and easy to find.