Specifications: Diameter: 18 mm (3/4 inch), Diamond Height：15 mm, Total Length: 60 mm, Thread: 5/8-11, Diamond Grit: #35/40 Vacuum Brazed Diamond Technology: Vacuum brazing technology is used to improve temperature resistance and friction resistance of diamond drill bits, high strength diamond brazed on the surface for fast drilling, heavy duty, more wear-resistant, more efficient, more durable and stronger than ordinary hole drill bit; High-quality matrix steel provides high-strength working support, which not only ensures the long-lasting performance of the core drill bit, but also improves the durability and service life High Performance & Speed and Smooth Cutting: The special U-groove tooth shape and chip evacuation design helps with chip evacuation and cooling, the wax inside the diamond core drill bit helps with cooling and lubrication, and the diamond pattern design ensures fast, smooth drilling, so you can quickly drill professional-grade, perfect holes with minimal swarf to avoid broken edges; This design minimizes overheating and reduces the risk of material damage Wide Application: Diamond hole saw are perfect for easy dry drilling on porcelain tiles, ceramics, bathroom tiles, marble, glass, granite, stone, masonry and brick; Mainly used for kitchen and bathroom renovation, installing faucets, soap dispensers and shower handles, water piping installation and more Dry or Wet Use: The cooling wax inside the drill enables efficient dry drilling; Drilling with water further extends the life of the diamond hole saw drill bit and ensures that it can be adapted to a wide range of drilling conditions, from tile cutting to porcelain and artificial stone tasks, for the long term Fit Machines: Diamond Core Drill Bit can be used on most angle grinders; If you encounter any problems when using the product, please feel free to tell us, we will provide you with solution Diamond Core Drill Bits 3/4 Inch (18mm) Tile Hole Saws Vacuum Brazed Diamond Hole Saw for Tiles Porcelain Ceramic Glass Marble Brick Granite Quartz, Dry or Wet Use, 5/8-11 Thread