Overlock lower knife to match
 W6- As models N444 454D
 Janome, model
 204D, 504D, 634D, 644D, 888,
 1110DX, 3434D, 7034D, 8002D
 8200DX, 9102D, HF504D,
 Privilege model
 344D 444 Prof 454D Prof
 Source ,
 Privilege and Further Model