This foot can provide perfect looking and durable seams on medium-heavy weight to heavy weight fabrics. You can create beautiful lap-seams without ironing. With the guides and curves of the foot, fabric can be folded neatly with just a light touch. 9mm wide flat felled seams can be created with the groove on the back side. Easy to see guidelines support making lap-seams. Match the finished line, needle position, and the guide A then sew. Match the seam and guide B then sew. The lap-seam foot offers two kinds of finishing. For 2 seam lines shown on the right side of the fabric, place the wrong sides of the fabric together and sew. For 1 seam line shown on the right side of the fabric, place the right sides of the fabric together and sew. Compatible with all 9mm maximum stitch width models including Continental M7 Professional, Memory Craft 6700P, Memory Craft 9450QCP, Quilt Maker Memory Craft 15000, Skyline S9, Skyline S7, Skyline S6, Skyline S5, MC8900QCP, MC8200QCP