The Bernina Buddy: Universal Foot Adapter 0019477000 is designed for old style presser foot adapters compatible with Bernina machines. It allows the use of screw-on feet on a variety of models, including the 1000 series (such as 1000, 1001, 1004, 1005, 1006, 1008, 1010, 1011, 1015, 1020, 1030, 1031, 1080, 1090, 1120, 1130, 1230, 1260, 1530, 1630), the 900 series (900, 910, 930, 931, 932, 940, 950), the 800 series (800, 801, 802, 803, 807, 808, 809, 810, 811, 817, 818, 819, 830, 831, 832, 840, 841, 842, 850), the 700 series (700, 707, 708, 709, 717, 718, 719, 730 not Artista 730, 731, 732, 740, 741, 742, 744), the 600 series (600, 610, 640 not Artista 640, 642, 644), and the 500 series (530, 532, 534, 540). This foot adapter is suitable for use with old style machines, providing a versatile solution for attaching screw-on presser feet across multiple models.