H004137 lower knife for Elna pfaff Description H004137 lower knife for Elna Serger 604E, 624DSE, 644, 704DEX, 745, 845, 904DCX, 945, PRO4, PRO4DC, PRO4DE, PRO5DC, PRO5DE Pfaff Serger overlock 4862, 4874 Inquire Now