Guaranteed to fit Singer Sewing Machine Models:
31-15, 37-2, 37-3, 37-4, 37-5, 37-6, 37-7, 37-8, 37-9, 37-10, 44-62, 52-52, 52-54, 52-55, 52-56, 52-67, 52-74, 52-76, 53-1, 53-2, 53-3, 53-4, 55-1, 55-2, 55-3, 55-4, 55-5, 55-6, 55-11, 55-12, 55-20, 55-21, 55-22