Holds Superior's 50wt Masterpiece Bobbins, the new (and larger) Efina 60wt Bobbins do not fit.

What sets this bobbin box apart is the foam insert. It holds the bobbins and (in most cases) will keep them from spilling out of the box if you tip it over. And, because the bobbins don't move around, thread tails stay put. Yay!

This box will hold the 28 bobbins.