Guaranteed to fit Pfaff sewing machine models:
Ambition 1.0, Ambition 1.5, Ambition 2.0, Ambition 3.0, Passport 2.0, Quilt Ambition 2.0, Smart 260C, Smarter 130S, Smarter 140S, Smarter 150S, Smarter 155, Smarter 160S

Guaranteed to fit Singer sewing machine models:
Featherweight C240