This part is compatible with Husqvarna Viking machines in groups 5, 6, 7, 7A, A, B, 02, *01 except *3010, *3310, *3610, *5610 and *5710. The Free Motion Echo Quilting Foot is designed to give you more control when free motion quilting. The large base ensures good surface contact with the fabric and provides better control of the stitching. The transparent base allows for 360° visibility. Vertical, horizontal and circular markings on the foot make it easy to follow a continuous line quilting pattern or design on the fabric. Sew straight lines or follow patterns with rounded edges in any direction. This is a screw-on floating free motion foot. Decrease the presser on the presser foot, decrease the upper tension and drop or lower the feed system (please consult your manual). Some models may have specials stitches that perform this procedure automatically. For additional information click on this link "How to do Free Motion Sewing."