Joe,
The Kenmore 120- bobbin is designated as 'H'. I have an old package of these and it says that they fit the Singer 221.
I haven't tried them to see if they fit the bobbinwinder pin on the 221, but size-wise then are exactly the same.
Cathy
Originally Posted by
J Miller
And I was wrong, there is another machine that can use the FW bobbins. The Kenmore 120-491 uses a bobbin that's so close to the FW bobbin they are interchangeable.
Joe