This foot provides superior visibility and is great for curves and precise topstitching. It holds fabrics firmly in sync with the feed dogs to achieve professional results. For use in combination with Professional Grade Needle Plate (HP). Professional Design: Great for curves and precise topstitching due to the narrow foot width with superior visibility provided by the shape of the slit at the front of the foot. Feed performance: Provides smooth feeding of top layer of fabric in sync with bottom layer for quilting and sewing leather or vinyl. Matching the edge of the fabric against the edge of the foot will give you a perfect 1/4" seam allowance.