Machine Compatibility: 1, 2, 3, 4, 5, 6, 7, 8, 9 Not sure which group your machine belongs to? Check out the Machine Compatibility Chart The Roller Foot sews fabrics with uneven levels, leathers, velvets, and fabric with nap or loops. Straight stitch, zigzag, and other forward motion utility and decorative stitches. How to use: Snap on Roller Foot. Select a stitch and sew. The little wheels ride smoothly over a variety of fabric types.