The overlock foot is used with any of the overlock or zig zag stitches used to finish raw edges of fabrics to prevent raveling. This foot is also used for simultaneous seaming and overcasting with the overlock stitches. 

This presser foot fits all "OLD STYLE" Bernina sewing machine models:

• 1000, 1001, 1004, 1005, 1006, 1008, 1010, 1011, 1015, 1020, 1030, 1031, 1080, 1090, 1120, 1130, 1230, 1260, 1530, 1630
• 900, 910, 930, 931, 932, 940, 950
• 800, 801, 802, 803, 807, 808, 809, 810, 811, 817, 818, 819, 830, 831, 832, 840, 841, 842, 850
• 700, 707, 708, 709, 717, 718, 719, 730 (not Artista 730, 731, 732, 740, 741, 742, 744
• 600, 610, 640 (not Artista 640), 642, 644
• 530, 532, 534, 540

While this item is not made by Bernina, it is of equal quality that you expect.