Brazed Diamond Hole Saw Diameter: 10mm-152mm Dry drilling conrete, stones, bricks etc. Features:1) Diameter: 10mm-152mm available 2) Diamond grit: 40 - 80, or upon request 3) Suitable for cutting various hard Non-ferrous material, such as marble, granite,glass, ceramic, hard concrete and brick4) With Special design of diamond brazing, the edge of saw blade will be free cutting,the efficiency of ...