Singer Stitch Computerized Sewing Notions (Set of 12)

This set of 12 class 15 metal bobbins serves as replacement bobbins for select sewing machines. Consult your machine’s manual to ensure the correct bobbin size. Use the metal bobbins beneath the needle plate in automatic sewing machines to wind the thread for your embroidery projects. Never add a thread to a partially wound bobbin, as it may be uneven and cause the thread to tangle or break.