Madeira Mag Core Bobbin L White Streamline your embroidery with Madeira Sideless Magnetic Core pre-wound bobbins. Perfect for embroidery shops, these bobbins deliver superior performance, reducing lint buildup and ensuring consistent tension for flawless stitching. Key Features: 🌟 Magnetic Core: Secures the bobbin in the metal case, reducing over-spin, friction, and wear. ✨ High-Quality Thread: Wound with 148 yards of continuous polyester filament thread for smooth, lint-free operation. 📦 Ample Supply: Each box includes 144 pre-wound bobbins, providing excellent value and convenience. Specifications: Type: Madeira embroidery bobbins Style: L Core: Sideless Magnetic Color: White Length: 148 yards per bobbin Quantity: 144 bobbins per box