Upper Knife for Serger / Overlock PFAFF (Ref. 29-924993-81/668)

The blades of a serger are at the heart of a perfect finish. With intensive use, and especially when cutting thick fabrics or accidentally sewing over pins, the upper knife loses its cutting edge (becomes dull) or develops small nicks.
This replacement movable upper blade will restore clean, precise cutting without chewing the fabric to your overlock machine. It is crucial to replace the blades as soon as you notice that the machine is fraying the fabric instead of cutting it straight, to avoid straining the motor and damaging the needle plate.
(Original and equivalent references: 29-924993-81/668, 29-924993-81)