Bobbin Case, Singer 221 Featherweight
Original singer bobbin case no longer available (part number 45750). Fits replica 221 Featherweights, also some original Singer 221 Featherweights, but not all. If your original bobbin case was marked 45750 as in some of the earlier Featherweights, then this bobbin case (45751T) may not fit or if fits may hang the thread occasionally.
This bobbin case will not fit 301 Singer Sewing Machine.