The Chosera stones are markedly harder than the Super Stones. Naniwa designed these stones for professionals who put the highest daily demands on their knives. Overall, these stones are best for those who don't have a lot of time to spend and need to quickly and cleanly sharpen their knives. Every Chosera sharpening stone is delivered with a special Nagura stone (67 x 49 x 25 mm) to put a fine sharpening paste on the surface of the Chosera stones during use. This 5k stone is a good final grit for many knives. This stone works well after the 1000 grit and is fine enough to be a good stone prior to the 10000 grit. Naniwa claims these are splash-and-go stones, but users say that soaking for 15 minutes really brings out the best qualities of the sharpening matrix. These stones measure 210mm x 70mm x 25mm.
Let me just say upfront that this is a great stone. Great feedback,slow wearing. The finish the stone leaves is,by itself,almost mirrored. When used with itís sister,the 10k,the edge is out of this world.
i got different man made watertstones,shapton glass stones,naniwa ss,Norton,but so far this stone is the best stone I ever had. It is hard,and the finish it leaves it so shiny,almost like a mirror. It is like a Coticule,but way cheaper and it gives a better finish. I;d buy it again!!