Serger acting up, not cutting cleanly?

It might be time for new blades.

This CKPSMS set includes both the upper blade and the lower blade – the essential cutting pair for your Brother serger.

It's a compatible replacement for specific Brother overlocker models, including the EF4-B511, EF4-B531, and MA4-B551 series.

The part numbers you're replacing are #144074001 (upper) and #112436001 (lower).

Always, always double-check your machine's manual or the old blades to confirm these are the right ones before you buy!

Installing serger blades can be a bit technical, so having some sewing machine knowledge or a guide handy is recommended (the seller offers technical support).

A sharp blade set is crucial for getting those perfect, professional-looking finished seams on your garments and projects.