After first tests of this pirre

I recommend this stone for people with occasional "blade" sharpening and especially to schedule another stone grain for a much finer edge "razor".
I say occasionally because it wears out fast enough. Distribute more than ever moving your "slide" across the stone to prevent it is widening milieu.N'oubliez especially not always moisten during sharpening.
Otherwise, it is a good price / quality ratio to perform the functions of a start sharpening or just have kitchen knives cutting correctly.