SuperBOBs #635 M-style Bobbins. 12 bobbins x 215 yds. each.
SuperBOBs prewound bobbins are wound with a 60 wt. 2-ply polyester thread (our Bottom Line thread) and are fantastic for quilting on your longarm machine. Lint free and lightweight, you'll love the convenience and quality of SuperBOBs prewound bobbins.