The Babylock Upper Knife B4401-03A-OY fits a number of models. We’ve listed them below. Of course this knife, like all overlocker knives, will suffer damage. Years of use and too many pins will do for it, in the end. Take care with the fitting to ensure a nice clean cut. If your two knives are badly worn it’s best to replace both. This Babylock Upper Knife will fit the following models, Desire 3 Evolution Ovation Gloria
