Naniwa NK-2204 Kagayaki Whetstone for Professional Use #400 Sharpener with Storage Case 8.3 x 2.8 x 0.8 inches (210 x 70 x 20 mm)

Stone looks good, havent used it yet, but ordered twice and both times the case came significantly cracked to the point on structurable instability. IDK if this is a manufacturer issue or an Amazon issue. At least returns are easy.

very sweet stone, splash twice and go.Hard wearing, doesn't clog, excellent performance.Recommend lapping prior to use.My stone arrived intact but the plastic box was broken, that's the only bummer.