This Listing is for a Brand New Upper Blade / Knife that fits many Serger machines
FITS Elna Serger 664
Janome / New Home models 204D, 504D, 634D, 644D, 888, 1110DX
Kenmore Models: 385.16644690
Husqvarna Viking Models: 650, 660CD, 680CD, 1000L, 1001L, 1002L & 1003LCD
Part #: 788011007, 788127007