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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 machine’s 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. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.







