Fil-Tech Magna-Glide Poly Classics Style L 130yd Prewound Bobbins 100ct Black. 

No. 60 Filament Polyester . Fil-Tec Bobbin central's patented magnetic core creates consistent delivery through 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 backlash springs. 

Magna-Glide is the original high-yield magnetic-core bobbins. 

100 bobbins in box.    

CHK-12457-L

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