HSS Twist Drill Bits, Diamond Saw Blade, Hole Saw manufacturer / supplier in China, offering 4" (105mm) Durable Diamond Blades for Concrete and Steel Bar Cutting, 10" (250mm) High Frequency Welding Diamond Saw Blade for General Purpose Diamond Blade, 10" (250mm) High Temperature Resistant Diamond Saw Blade Used for Slicing Marble and Granite and so on.