Brother open toe metal foot cat k provides better visibility in the needle area ideal for securing edges of appliqu sewing curves topstitching etc adding decorative stitches over seams or patterns line up the center guide mark red of the presser foot to the seam or pattern line and sew for appliqu1 line up the center guide mark red of the presser foot to the edge of appliqu2 zigzag sew with dense stitches compatible with brother category k sewing machines