Part # : 45751+45785 5PCS         

The alternative part number IS  : BC-HR221+45785 5PCS  

THIS LISTING INCLUDES :

•1 PCS Part #45751/BC-HR221  bobbin case

•5 PCS Part #45785 bobbins

Brand new high quality 1 pcs Bobbin Case and 5 pcs Bobbins

FIT FOR Singer FeatherWeight Sewing Machines models: 

221 Featherweight, 221-1, 221k, 222, 222k, 301, 301A

Attention: in case 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.