DEWALT DW8452H T27 Stainless Steel Cutting/Grinding Wheel, 5/8-11 Arbor, 4-1/2-Inch by 1/8-Inch High performance aluminum oxide grain for long life and high material removal High grain concentration for aggressive material removal in stainless steel 3 full sheets of glass in every wheel for added durability and safety Free of iron, sulfur and chlorine for contaminant free grinding and cutting