White corundum whetstone 1.Finer grits 2.Eco-friendly 3, ... stone/oil stone/abrasive stone Materials:White Aluminium Oxide, Size: 180x60x27mm,Availabe materials: White Aluminium Oxide,Black Silicon Carbide,Green ... /#1500, #1000/#4000, #1000/#6000, #2000/#5000,#3000/#8000#180/#320, #400/#1000.The grits and sizes can be done ... during the sharpening process to prevent any injuries. White corundum whetstone