I have the 1000-4000 stone from BearMoo, which looks like the exact stones from y-start.

I really like the 1000-4000, but plan on buying the 3000-8000 as well. These stones work very well and are not cheap garbage.

Get yourself a leather strop also. I made two strops. One for smaller knives, and one for large kitchen knives and my small forest axe.