Guaranteed to fit Pfaff sewing machine models:
260C Smarter, Ambition 1.0, Ambition 1.5, Ambition Essential, Passport 3.0, Passport 2.0, Quilt Ambition 2.0, Smarter 160S

Guaranteed to fit Singer sewing machine models:
Quantum L-500

Alternate Part Numbers: 416580301