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Pack of 10. Some Husqvarna-Viking 600 series and 990 series using bobbin case #4120972-01 will require concave bobbin #4120975-45
Alternate Part Numbers
411-44-01
Fits the following Husqvarna Viking sewing machine models
100, 120 Optima, 150 Optima, 180 Optima, 185 Optima, 190 Optima, 2000, 6000-series, 610 Optima, 610 Optima, 620 Optima, 620 Optima, 630 Optima, 630 Optima, 900, 940 Prisma, 945 Prisma, 950, 95 Classica, 960, 990 Prisma, 990s Prisma, 2, 3, 4, 980 Prisma