Diamond Tool, Diamond Saw Blade, Diamond Cutting Blade manufacturer / supplier in China, offering M14 Diamond 6mm-120mm Vacuum Brazed Diamond Core Drill Bits for Hole Saw, 5/8"-11 High-Performance Diamond Vacuum Brazed Core Drill Bit for Rock and Stone, 8mm Vacuum Brazed Core Bits for Drilling Holes on Granite and Marble Countertop and so on.