If you’re lucky enough to have an overcast/overlock stitch on your sewing machine, it may have been supplied with this extra foot. If not, it’s a useful addition to your accessory box as the built-in guide will hug the edge of the fabric and ensure a neat and efficient seam finish. Can also be used with the zig-zag stitch. Fits most modern domestic machines using the common snap-on type presser foot, e.g. Janome, Brother, Singer, etc.