Zhehao 4 Pieces Serger Blade Sewing Machine Blades Serger Knife Overlock Blade Household Overlocker Knife Set Compatible with Brother 925D 929D 935D 1034D Upper and Lower Knife X77683001 XB0563001

I have 2 sergers so why not change all the knives at the same time. Super easy and sharp, fabric glides through.

Girlfriend says they work so that's all that matters

I bought these in April 2022 and it’s now dec 2023 and I just swapped it out for the second pair. I probs could’ve done it a bit earlier but the first set really just lasted that long without many problems. I honestly forgot that I bought a two pack at first because I haven’t changed it since.I wanna say though that it’s super important to change out your blades when you start to notice them not cutting as sharply. If you don’t, it can cause problems since the fabric may not get cut, get fed through to the needles and loopers, and get stuck.If you have a brother 1034d, you may know that the timing of the loopers gets set off quite often since the machine is made cheaply. So, to prevent that, changing out the blades is important. Along with cleaning and oiling regularly :)

It was on me because I assumed 1634d and 1634dx would be compatible. The top knife fits almost perfect and cuts smoothly, bottom is too long for 1634dx

EASY TO REPLACE AND WORKED PERFECTLY!