It is a necessary and sufficient quality.
I used it on my N-MAX LowerStem bearing. I was going to buy OEM but it was cheaper than OEM so I used it.
I opened the package and checked various things as a layman, but as for the construction, I felt that the quality was comparable to that of OEM. Because it is not possible to measure the exact precision, I do not understand, but especially without BALI etc., the smoothness of the surface was also felt in a good state. The only thing is that there is a light amount of Rust on the Race that can be removed by rubbing, so I thought it would be necessary to devise a better storage level and wrapping paper for the parts.
The Level is cheaper than OEM Parts, so it makes sense to me. You just need to remove it with a perc and polish it a little where you are concerned.
After the replacement, the operation was smooth! Stem maintenance is Large, but even when new, there are many units that do not run smoothly due to over-tightening or low Grease. It takes a lot of time and effort, but it's worth it.

