Fil-Tec patented magnetic-core creates consistent delivery throughout the entire bobbin. No more tension adjustments as your bobbin gets smaller. Magnetic-core prevents backlash or over spin & eliminates the need for backlash springs.
FT-MGCL.60240 Navy (#60240) – Magna-Glide Classics – L Size – Box of 72 – Kawartha Quilting and Sewing LTD.