BERNINA Thread Library powered by Mettler, a premium collection of colorfast, heat-resistant threads designed for durability and luxurious silk-like texture, high-quality Mettler thread, conveniently organized in a portable storage tote with a handle for easy access and organization. This comprehensive kit features a mix of METROSENE, CORDONNET, SERACYCLE, SERAFLEX, DENIM DOC, SILK-FINISH COTTON, POLY GLOW, METALLIC, and POLY SHEEN threads, giving you the perfect variety for any sewing task. Get best offers and options at Top Notch Sew & Vac.