The WEIWEI combination whetstone is a water stone made from corundum, which is an extremely hard aluminum oxide.
It has those characteristics of fine texture the sharpening face ensures sharpening.
There are two classes of stones: coarse and finishing.The Coarse Stones are 240, 800, and 1000 grit. The Finishing Stones are 2000, 3000, 4000, 5000, 8000 and 10000 grit. The 240, 800, and 1000 grit are faster cutting and used for repairing nicked edges or reshaping a bevel. used for the stage of the Coarse Grit. 2000, 3000, and 4000 grit stones are used for the stage of the Fine Grit.The 5000, 8000 and 10000 grit stones are used for the stage of the Polishing Grit.