... sharp and has a long life. Features for Diamond Blade:We are factory specializing in research and manufacture of diamond ... tools, such as Circular saw blades, Multi-blades, small saw blade, DiamondWire, Diverse-shaped Diamond Tools, Diamond Millstones, Diamond Core ... for diameter 250mm to 800mm blade use for cuttinggranite, marble, concrete and aphalt. Diamond Blade for Cutting Concrete Asphalt and ...