Magna-Glide Style M Bobbin Sand

A patented magnetic core creates consistent delivery throughout the entire bobbin. No more interruptions for tension adjustments as your bobbin gets smaller. These magnetic-core bobbins prevent backlash or overspin & eliminate the need for backlash springs as well as offers significantly more stitches per bobbin, reducing defects & increasing productivity. Advanced EB cross-link technology reduces lint & residual build-up in the bobbin case & tension spring. The result is a more trouble-free bobbin.