Compatible with many Baby Lock, Bernette, Happylock, Janome, New Home, Juki, Minilock, Necchi, Pfaff, Riccar, Serge Mate, Simplicity, Singer, and Supreme sergers For Old or Original Model Babylock, Bernina Bernette by Juki, Elna, Happylock, Janome, New Home, Juki, Necchi, Pfaff, Riccar, Simplicity, Supreme, Mammylock, Nelco, MiniLock Portable Overlock Machines *Compatible with Babylock Serger Models: BL300, BL5030, BL4-605, BL4-625 & EA-605. Compatible with Bernette Serger Models: MO203 & MO204. Compatible with Happylock Serger Models: 1867 & 5030. Compatible with Janome (Newhome) Serger Models: 604, 777, 778 & 779. Compatible with Juki Serger Models: MO103, MO104 & MO134. Compatible with Minilock Serger Models: FR850 & FR855. Compatible with Necchi Serger Models: NL3, NL3R & NL4. Compatible with Pfaff Serger Models: 604. Compatible with Riccar Mate Serger Models: RL340, RL343D, RL343DR, RL613 & RL624. Compatible with Serge Mate Serger Models: 300. Compatible with Simplicity Serger Models: SL500 & SL803. Compatible with Singer Serger Models: 10UJ13. Compatible with Supreme Serger Models: ML4 & ML94. Specifications Compatible with Babylock Serger Models: BL5030, BL300, BL4-605, BL4-625 & EA-605 Compatible with Bernette Serger Models: MO-203, MO-204 & MO-234. Compatible with Elna Serger Models: T33, T34 & T34D. Compatible with Happylock Serger Models: 1867 & UHT J 1867. Compatible with Janome (New Home) Serger Models: 777, 778, 779 & 604 Compatible with Juki Serger Models: MO-102, MO-103, MO-104 & MO-134. Compatible with Necchi Serger Models: NL3, NL3R & NL4. Compatible with Pfaff Serger Models: 604, 794 & 795. Compatible with Riccar Serger Models: RL330, RL340, RL343, RL343D, RL343DR, RL613 & RL624. Compatible with Simplicity Serger Models: SL500 & SL803. Compatible with Singer Serger Models: 10UJ13, 14U12, 14U12A, 14U13, 14U13A, 14U52A & 14U53A. Compatible with Supreme (Mammylock) Serger Models: ML303, ML303R & ML4.