... and grinding 2.Low price 3.free samples General corundum whetstone 1.Finer grits 2.Eco-friendly 3, Long life, durability ... 4. Various sizes and gritsProduct name: whetstone/oil stone Availabe materials: WA,C,GC,A,PA,DAAvailabe ... , #1000/#6000, #2000/#5000,#3000/#8000#180/#320, #400/#1000. Knife sharpener whetstone