DEWALT DW4711 Industrial 4-Inch Dry Cutting Segmented Diamond Saw Blade with 5/8-Inch or 7/8-Inch Arbor Extended performance diamond matrix provides 350x foots the life of conventional abrasives and enhanced material cutting Segmented rim blades are laser welded with heat treated steel bodies which provides increases durability and long life Large diamond segments with cobalt is ideal for use across varios product applications