✅(100-Piece) Black Bobbin : Fits Umbrella Sewing Machines and many other industrial models. ✅ Durable & Long-Lasting: High-quality construction that resists wear and tear for extended use. ✅ Tangle-Free Performance: Wound evenly for smooth operation and minimal thread jams. ✅ Bulk Pack Advantage: 100 bobbins to keep your machine running longer without interruption. ✅ Ideal for Professionals: Designed for industrial environments, garment factories, and home sewing enthusiasts.