BERNINA Cordonnet Foot #11 is ideally suited for topstitching and decorative work with cordonnet thread or other thicker topstitching threads. The 2-mm-deep groove under its sole allows Cordonnet Foot #11 to glide smoothly even over thicker threads, as well as ensuring even fabric feed at all times. It also enables smooth, precise sewing of sashiko patterns and other decorative designs.