This set includes 10 metal bobbins designed for a variety of Viking sewing machines. Each bobbin is crafted to ensure smooth operation and reliable thread management during sewing projects. These bobbins are compatible with numerous models, including those in the 2000, 6000, 19-E, 21, 49, 51, 52, 522, 990, 980, 960, 950, 945, 940, 630, 620, 610, 190, 185, 180, 150, 120, 105, 100, 95, 90, 2, 3, 4, 990S, 950S, 6690, 7, 5220 series, and others. They are suitable for use with Viking sewing machines requiring metal bobbins, providing a consistent and durable supply for sewing tasks. Each pack contains 10 bobbins, making it convenient to keep a ready supply for ongoing sewing needs. These bobbins are essential for maintaining efficient sewing performance and ensuring your machine operates smoothly.