Bobbin Case # 7172, # 8327

For the model of your search. A bobbin case, also known as a bobbin holder or bobbin shuttle, holds the bobbin that is filled with thread. Each machine has a specific bobbin case. Singer Bobbin Case # 7172
Singer 127, Singer 127-12, Singer 127-3, Singer 128, Singer 128-12, Singer 128-13, Singer 128-18, Singer 128-23, Singer 128-3, Singer 128-8, Singer 128k, Singer 27.