This is a NANIWA CHOSERA Japanese Super Ceramics Whetstone #3000 Grit , with Plastic Holder which is the highest grade and most selling Naniwa's Whetstone for Professional use. Comes with Dressing Stone/Nagura stone #600 grit for flattening on the purpose of correction.
Chosera # 3000 Grit is medium to fine stone, used as finishing stone for most of the kitchen knives.
Size : 210mm x70mm x25mm
Made in Japan