Singer Professional Buttonholer Slant Needle ZigZag Sewing Machines Instructions The Singer Professional Buttonholer is a sewing machine accessory designed specifically for Singer brand machines. Made in China, this buttonholer attachment allows for easy creation of perfectly formed buttonholes with its slant needle and zigzag stitching capability. Instructions for use are provided, ensuring that users can quickly and effectively incorporate this accessory into their sewing projects to achieve professional results. Ideal for crafters and seamstresses looking to enhance their sewing machine capabilities, the Singer Professional Buttonholer is a reliable and high-quality tool for creating beautiful buttonholes with precision and ease.