413320245 fits 7, 8, 9 but not Opal

The Free Motion Echo Quilting Foot is designed to give you more control when freemotion quilting. The large base ensures good surface contact with the fabric and providesbetter 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 continuousline quilting pattern or design on the fabric. Sew straight lines or follow patternswith rounded edges in any direction.