HONEYSEW 1pc Snap On 541537 Straight Stitch Narrow Foot SINGER Sewing Machine Slant Shank Needle PRESSER FOOT # 541537 Singer Slant Shank Straight Stitch Snap-On Use With 542167 Snap on Straight Stitch Foot 541537 the pin of presser foot is 2MM. it will fits most of slant shank and low shank old style sewing machine