It is unlikely, but possible that available products may be out of stock. In this event you will be contacted to either cancel the order or go forth with an extended delivery date.
The Bernina #23 new style applique presser foot is perfect for sewing narrow applique buttonhole seams (up to 2mm). The clear sole allows sight to the stitching area, and the small groove in the front can hold cording and ribbon.
Stitch width 5.5/9mm