... 2.Beautiful shapes 3.Competitive Prices Item Name: Dual color white alundum oil stone #1000 precise Other Name: Alundum sharpening ... black silicon carbide oil stone, brown corundum oil stone and white corundum oil stone are our main products.Grit Size: 24 ... : alundum, carbide silicon, china clay, feldspar and dextrin Shapes: Rectangular, square, boat, bar; We can do oil stone with handle ...