The Brother Vertical Stitch Alignment Foot is a genuine Brother accessory designed for topstitching straight and curved lines with precision. This snap-on metal foot features visibly marked measuring lines spaced 2mm apart, which serve as a fabric guide for accurate seam placement. The horizontal opening accommodates a wide range of left-to-right needle positions, offering flexibility in your stitching. This foot also serves as a replacement for the Vertical Stitch guide for the edge sewing attachment on Brother’s Quattro machine, making it perfect for edge sewing and other detailed projects.