-New replacement Serger knife(carbide)
-Upper part # 50143403
-Lower part # 50145403
-Fits Bernette 003, 004, 006D, 007D, 008D, 009D, 1100DA, 1200DA, 1300DC, 334, 334D, 334DS, 335, 335DS, 700D, 800D, 800DL
-Juki MO613, MO623, MO634, MO634DE, MO644D, MO654DE, MO655, MO655DE, MO734DE, MO735