BERNINA #3A Buttonhole Foot with Slide
As for 12/23/2021, this foot is on backorder from BERNINA and not expected to arrive until February. We are continuing to take orders for it and will ship when it arrives.
This automatic buttonhole foot makes it easy to sew buttonholes of the same length. A sensor on the presser foot determines the buttonhole length and relays the dimensions to the sewing machine. This allows perfectly identical buttonholes to be sewn again, until the size is changed. No need to press a button to stitch the second half of a buttonhole!