Fits Viking sewing machines And Serger Machines. FITS :Eden Rose 250C, Designer Diamond, Designer Diamond deLuxe, Designer Diamond Royale, Designer Epic, Designer Ruby deLuxe, Designer Ruby Royale, Designer Topaz 20, Designer Topaz 25, Designer Topaz 30, Designer Topaz 40, Designer Topaz 50, Emerald 183, Emerald 203, Huskylock S25, Lena, Opal 650, Opal 690Q, Opal 670, Performance 5.2, Quilt Designer, Quilt Designer 2, Sapphire 830, Sapphire 835, Sapphire 850, Sapphire 855, Sapphire 870, Sapphire 875, Sapphire 930, Sapphire 960Q, Tribute 140C, Tribute 145 FITS PFAFF Creative 2.0, Creative 3.0, Creative 4.0, Creative 4.5, Creative Performance, Creative Sensation, Creative Sensation Pro, Creative Vision, Expression 2.0, Expression 3.0, Expression 3.2, Expression 3.5, Expression 150, Performance 5.0, Quilt Expression 4.0, Quilt Expression 4.2 FITS White 4910, 620, 8910, 9800