These 300mm & 350mm diamond saw blades are designed with 3 protective segments, for cutting asphalt quickly. Laser welding type enhanced the welding strength and ensures a longer lifespan of these asphalt cutting blade. Different from other materials, the asphalt will become sticky as the cutting goes on and the protective segments can protect the diamond saw blade from injury. Sunny Superhard Tools provides you with the best diamond saw blades for cutting concrete, reinforced concrete, asphalt, granite, marble, and other stones. The quality is guaranteed and OEM/ODM services are welcome!