For machines with the B9 Hook Black bobbin case for sewing & embroidery Red bobbin case for bobbin work Compatible with B9 Hook bobbins The bobbins for the B9 Hookhold 70% more thread than standard bobbins. This enables you to sew for even longer without interruption. B9 Hook Bobbins and Bobbin Cases are required for the following machines: B 710 B750 QE B 780 A red B9 Hook bobbin casefor bobbinworkis required for these machines. B 710 B 750 QE B 780 Reviews There are no reviews yet. Be the first to review “Bernina B9 Hook Bobbins and Bobbin Cases” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.