... 2.Beautiful shapes 3.Competitive Prices Item Name: Dual color white alundum oil stone #1000 precise Other Name: Alundum sharpening tool ... , black silicon carbide oil stone, brown corundum oil stone and white corundum oil stone are our main products.Grit Size: 24 ... stone / sharpening stone, please view our relative catagory Dual color white alundum oil stone #1000 precise