18" (450mm) blade for cutting granite. Description 450mm Diamond Saw Blade for Granite Diameter 450 mm Segment Size 40×4.0x15mm Inner hole 60mm Technology Sintering and high frequency welding Saw Blade Material Manganese steel Silent or Non-silent as your requirement Advantage high efficiency, long using life and smooth cutting with no damage to the edge. Customized Quality & specification can be supplied according to customer’s requirement.