The Singer Professional Buttonholer has 20 cams is a specialized accessory designed for Singer vertical needle zig zag sewing machines. This unit allows for easy and precise buttonhole creation, making it a valuable addition to any sewing enthusiast's craft room. With its compatibility specifically tailored for Singer machines, users can trust in the quality and reliability of this product for all their sewing needs. It is still in box. Can not confirm if it has ever been used.
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