This Granite Blade is laser welded, the diameter is 500mm. The narrow U slots can make fast and smooth cutting with long life. For different size blade : 250mm-600mm with different shape and structure. Diamond silent saw blade can be used on multi blade cutter Gang Saw Blade, bridge cutting machine, single arm cutting machine, manual handing machine and able cutting machine. Granite silent cutting disc has long life and smooth cutting surface, high cutting efficiency to save energy consumption.