Oozuko Sunashi (without Su) Suita - Just received (not yet lapped and barely tested). Extremely hard and dense - weighs a ton. Appears to be extremely fine as well - moreso than my other Oozuko which is like honing on silk. Not easy to raise a slurry. I expect to use this with mejiro/koma nagura in the earlier stages, and then as the final, final finisher with light slurry or water.