Tyrolit silicon carbide / carborundum and aluminum oxide / corundum 150/320 grit sharpening stones (no replies)

One manufacturer

same size
same grits
same type of bonding
similar hardness
similar porosity

but

different abrasive particles - silicon carbide / carborundum and aluminum oxide / corundum




it will be interesting comparison for me in the future to sharpen different steels on the two stones and see how they perform...