Natural Whetstone. Naniwa has been manufacturing quality waterstones for over 60 years in Osaka, Japan. TL;DR Is the Naniwa super stone good or crap when comparing pricewise to the chosera/professional worth it? Rada Knife Sharpener. Buy It Now +$18.00 shipping. Brand New. Naniwa Stone. We carry the baseless version so the stone can be used on both sides. Our selection of Naniwa stones makes it easy for you to find the right stone for your sharpening needs. Chefs Choice 100. Naniwa Nagura stone # 800 sharpening Cleaning Correcting Flatten whetstone See more like this. I have considered the chosera for my next stone but recently found out that the professional stones are the official successors to the chosera line. dick sharpener. smiths sharpening stone. From Japan. King Whetstone. Watch; S P O N S N O R E D 4 4 F B 0 C 3 D S Q. Vintage Knife Sharpener In Cutlery Sharpeners. Japanese Whetstone. Watch; S P T O N Z S S X O R E 4 D D 1 B W G. NANIWA EBI Japan iron Flattening powder for Whetstone Sharpening Stone #150-#240. Chosera Sharpening Stones are considered the best commercial stones on the market today. Chefs Choice 310. Knife Sharpener As Seen On Tv. Naniwa Professional Chosera 400 Grit Scissor Pro Sharpener. $34.99. Edge Pro Apex. New listing Naniwa Chosera Sharpening Stones Set: 400-10000 Grit for Apex Edge Pro - K. C $389.81 Buy It Now +C $29.07 shipping