Magna-Glide Prewound L Bobbins White - 100 count by Magna-Glide

Uniform Tension Control - Our patented magnetic core creates consistent delivery throughout the entire bobbin. No more interruptions for tension adjustments as your bobbin gets smaller. Magnetic core prevents backlash or over spin and eliminates the need for check springs. Fewer Bobbin Changes - Our magnetic core bobbin offers significantly more yards per bobbin changes results in fewer defects and more production. Clean Running - Advanced EB cross-link technology reduces lint and residual build-up in the bobbin case and tension spring. The result is a more trouble-free bobbin. High Quality Yarn - Fil-Tec uses only the finest quality high tenacity polyester yarns to make it patented magnetic core embroidery bobbin.