Fil-Tec Magna-Glide Delights, M Style Prewound Polyester Bobbins

Fil-Tec's Magna-Glide, prewound bobbins make bobbin changes a breeze. Since they have consistent tension throughout, you will achieve nicer stitches. The patented magnetic-core prevents backlash creating consistent stitches and eliminating the need for a backlash spring (if your bobbin case has a backlash spring, remove the spring before inserting this bobbin). This trouble-free bobbin reduces lint and residual build-up in the bobbin case. Each bobbin holds 132-yards of 40-weight trilobal polyester thread, and each container holds ten bobbins. You can use the Magna-Glide Delight Bobbins to sew, quilt, or craft. For best results, it's recommended that you use these bobbins in tandem with Glide thread on the spool. Always insert the bobbin magnet side down into the metal case.