This set of 4 class 15 metal bobbins serve as replacement bobbins for select SINGER sewing machines and Brother machines XL3010, XL3022, and VX1120. Consult your machines manual to ensure 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 thread to a partially wound bobbin, as it may be uneven and cause thread to tangle or break.

• 4 Class 15 metal bobbins
• Compatible with select SINGER and Brother XL3010, XL3022, and VX1120
• Durable metal construction for long-lasting use
• Always start with an empty bobbin to prevent tangling