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. They are designed for applique, bobbin thread, and quilting
This tube includes (12) #601 Yellow M-style SuperBob Bobbins. 12 bobbins x 215 yds. each.
Manufactured by Superior Threads.