Guaranteed to fit Janome (New Home) Serger Models:
104D, 134D, 203 (MyLock), 234, 234D, 303, 304D, 334, 334D, 434, 434D, 534D

Guaranteed to fit Kenmore Serger Models:
156.4180, 166.31490, 166.33790, 166.4190, 166.42090, 385.1564180, 385.16631, 385.16631490, 385.16633790, 385.1664190, 385.16642090

Guaranteed to fit Pfaff Serger Models:
4752 Hobbylock, 752

Alternate Part Numbers: 784045019, 784045020, 98-784045-02/000