DEWALT DW4740S 4 1/2-Inch x 0.250 XP Sandwich Tuck Point Blades are designed for extended performance with a diamond matrix for long life and enhanced material cutting. Segmented rim blades are laser welded with heat treated steel bodies which provides increase durability and long life. This blade features large diamond segments with cobalt ideal for use across various product applications such as dry cutting concrete, stone and brick and for fast rough cutting. Diameter: 4-1/2 Inch/Edge Thickness: 0.250-Inch/Segment Height: 8 mm/Max rpm: 13, 300.