221 Featherweight, 221-1, 222, 222K1, 222K2, 301, 301A
6. Notice
If your singer 221 machine came off an late 40's or early 1950's , the bobbin case fitting your machine should be 45750, NOT 45751 from this listing.
7. Technical supports
1) In case you are not sure if these parts are compatible with your machine, please feel free to send us a message via ebay, our technicians will provide you with professional and accurate advice in 24/7.
2) Do not hesitate to contact us if you run into any issue using the received parts.
3) Please provide us with your machine brand and complete model for technical supports.