Saw Blade, Drill Bit, Grinding Cup Wheel manufacturer / supplier in China, offering Laser Welded High Quality 152*24*4.0*10*7*195*M16 Thread Diamond Drill Bit for Cutting Reinforced Concrete Concrete Beton, Laser Welded 112*24*4.0*10*5*195*M16 Thread Diamond Core Drill Bit for Cutting Reinforced Concrete Concrete Beton, Hot Sale Laser Welded 2 Inch 52*10*195*M16 Diamond Hole Saw Core Drill Bit for Dry Cutting Reinforced Concrete and so on.