Whether an enthusiast caring for the finest blade or a straight razor user demanding a comfortable shave, the Naniwa Prosfessional 10K stone (formally called the Chosera 10k water stone) is a premier stone which produces premier edges. Naniwa changed the name but these are the same stones from their top-of-the-line series that are renowned for working quickly with great feel, keeping sharpening sessions quick and satisfying. Cleanup and use are sped up thanks to splash-and-go convenience. Extended soaking is discouraged by Naniwa due to the composition of the stone. The Pro Chosera 10k is hard and wears slowly helping to maintain a true surface for honing and providing for extended stone life. The 10k stone measures 8 1/4" long x 2 3/4" wide (210mm x 70mm), and weighs 1 lb. 8 oz. (686 g).
It is a very hard stone yet it polishes it is thicker than a standard Chosera probable 15% since it is an occasional stone unless it is used to sharpen razors daily it is likely to last many years .Dishing is minimal since the stone is so hard many high grit stones are soft it also means that you can work quickly on it without fear of cutting into it .Well worth the money especially from CKTG.