Unleash your creativity with our versatile sewing machine accessories, compatible with top models from Bernette, Europro, EverSewn, Husqvarna Viking, Juki, Pfaff, and Singer. Whether you're stitching with a Singer Heavy Duty or a Bernette Sew Go, our high-quality accessories ensure smooth, precise sewing every time. Perfect for hobbyists and professionals alike, elevate your sewing projects with tools designed for excellence and reliability. Sew smart, sew beautifully! ==== FEATURES: ==== (A) **Universal Compatibility**: Our Large Spool Cap R12373210B and Small Spool Cap TA10943209S are meticulously designed to fit a wide array of Singer Sewing Machines, including popular models like the Singer 4423, 1105, 1507, 2250, 3221, 3709, and many more. Whether you own a Tradition, Simple, Fashion Mate, or Heavy Duty series, these spool caps ensure a perfect fit, making them an essential accessory for any sewing enthusiast. (B) **Enhanced Sewing Performance**: Say goodbye to thread tangling and uneven stitches! These spool caps are engineered to provide optimal thread tension and smooth feeding, ensuring your sewing projects are executed with precision and ease. Perfect for both professional and hobbyist sewers, these caps help maintain consistent stitch quality, even during high-speed sewing sessions. (C) **Durable and Reliable**: Crafted from high-quality materials, our spool caps are built to withstand the rigors of frequent use. They are designed to be long-lasting and resilient, providing you with a dependable solution that keeps your sewing machine running smoothly. With alternate part numbers 416500701 and R12373209, you can trust in their compatibility and durability for all your sewing needs.