SHAPTON Professional Series 1000 grit, medium grit Whetstone
Professional grade ceramic whetstone 8.27 inch X 2.76 inch X 0.59 inch (210mmX70mmX15mm)
The plastic box is able to be a whetstone holder, when it is used as the sharpening stone. It is good for the knife blade sharpening regularly It is also great sharpening stone transiting from rough grit stone, and fine grit stone.