Magna-Quilt prewound bobbins from Fil-Tec bring the original magnetic-core design to 100% Egyptian long-staple cotton. The patented magnetic core delivers uniform tension from the first stitch to the last yard — no backlash, no over-spin, no backlash spring needed — while the mercerized extra-long-staple cotton runs clean with minimal lint buildup in your bobbin case.

Wound with 50wt cotton thread, Magna-Quilt bobbins are made for quilting and piecing projects where you want the soft look and feel of cotton in the bobbin. Every color is colorfast and wash-fast, with a beautiful luster.