The Rotary Bobbin is one of the four different hooks used in BERNINA sewing machines. It also has different bobbins and bobbin cases for different purposes. 5.5mm bobbin.
Compatible machines:
BERNINA 940, 950, 1000, 1000S, 1000UP, 1001UP, 1070 and 1630
BERNINA artista 180 and 185
BERNINA aurora, 435, 450 and 640
BERNINA artista, 200 and 730
BERNINA 560 and 580
BERNINA 8 Series (old)