Upper Blade for Cut and Sew / Overlock (Ref. 416321701)

The movable upper blade is the blade that performs the main cutting action against the lower (fixed) blade. Continuous use, accidentally running over pins, or cutting thick synthetic fabrics quickly dulls the edge of this part. A dull blade impairs stitch formation, pulls on the fabric, and forces the machine to exert unnecessary effort.
Its replacement is a quick and simple procedure that immediately restores factory cutting quality.
(Original and equivalent references: 416321701, 412585, 416669301)