Bernina #20 Open Toe Foot. Using an open toe presser foot allows you to view the thread, and the fabric, so you can watch as you sew. For old style Bernina models such as 530, 532, 534, 540, 600, 610, 640 -not Artista 640, 640-2, 644, 700, 707, 708, 709, 717, 718, 719, 730 - not Aritsta 730, 731, 732, 740, 741, 742, 800, 801/S, 801 Sport, 802 Sport, 803S, 803 Sport, 807, 808, 809, 810, 811, 817, 818, 819, 820, 830, 831, 832, 840, 841, 842, 850, 900, 910, 930, 931, 932, 933, 940, 950, 1000, 1000+, 1001, 1004, 1005, 1006, 1008, 1010, 1011, 1015, 1020, 1021, 1030, 1031, 1050 Holidaynu, 1070, 1080, 1090, 1120, 1130, 1230, 1240, 1260, 1530, 1630 Bernina compatible-Not a trademark Bernina accessory Also known as Satin Stitch Foot.