HONEYSEW Upper Knife 50143403 & Lower Knife 50145403 Blade Juki MO-623 MO-634D MO-644D MO-654DE MO-655 Serger A Brand New Set of Upper and Lower Knives / Blades UPPER KNIFE #50143403 #A4142335 LOWER KNIFE #50145403 For BERNINA & BERNETTE OVERLOCK MODELS 003, 004 For JUKI MO-300, MO-623, MO-634D, MO-644D, MO-654DE, MO-655