Guaranteed to fit Husqvarna Viking sewing machine models:
Designer Diamond, Designer Diamond Royale, Designer Diamond deLuxe, Designer Ruby, Designer Ruby Royale, Designer Ruby deLuxe, Sapphire 960Q

Guaranteed to fit Pfaff sewing machine models:
Creative 2.0, Creative 3.0, Creative 4.0, Creative 4.5, Creative Performance, Creative Sensation, Creative Sensation Pro, Creative Sensation Pro 2, Creative Vision 5.0, Creative Vision 5.5, Expression 150, Expression 2.0, Expression 3.0, Expression 3.2, Expression 3.5, Expression 710, Performance 5.0, Performance 5.2, Quilt Expression 4.0, Quilt Expression 4.2, Quilt Expression 720