#97D BERNINA Patchwork Sewing Machine Foot The BERNINA Patchwork Foot #97D is designed for straight-stitching and is ideal for sewing ¼" or ⅛" seam allowances and top stitching. It is available for BERNINA machines that have a maximum stitch width of 9mm. For patchwork projects with seam allowances of 3 mm (1/8"), 6 mm (1/4") and 7.5 mm (1/3") Three notches on the side for precise guidance For 9 mm machines with BERNINA Dual Feed system The foot print of the sole fits perfectly with the feeding system for the most accurate feeding and stitching when piecing patchwork blocks on a 9mm BERNINA machine. Compatibility: B 570 QE/QEE, B 590, B 710, B 740, B 750 QE, B 770 QE/QEE, B 790, B 790 PLUS, B 780, B 830, B 880, B 880 PLUS *For legacy machines manufactured before 1993, please contact your local BERNINA dealer.