Upper Knife, Simplicity #428-9101-01B Details
Guaranteed to fit Baby Lock Serger Models:
BL4-428, BL4-436D, BL3-437, BL4-428, BL4-728, BL4-736, BL4-738, BL428, BL5180, BL5180NS, BL5260, BL5260N, BL5280, BL5280E, BL5280ENS
Guaranteed to fit Simplicity Serger Models:
SL850, SL880
