HPMAISON 20mm Diamond Drill Bits, M14 Vacuum Brazed Dry Core Bit Set for Drilling Porcelain Tile Granite Marble Stoneware, Fits Angle Grinders

Premium Material: Our Diamond Core Drill Bits are made of premium diamond. Using vacuum brazed technology, the temperature resistance and friction properties are improved, enabling the diamond particles to adhere better to the core steel, thus enhancing the performance and service life. Manufactured with high-grade diamond abrasive grains, it can cut easily and improve the durability in harsh applications. The high grade core steel body contributes to improved efficiency and durability, and is not prone to deformation 1PC Diamond Drill Bit Size: 20mm Diameter, 10mm diamond height, 60mm total length, M14 thread connection of the diamond tile drill bit Fast and Smooth Drilling Performance: The special U-shaped groove tooth shape and chip removal design of the tile hole cutting machine have high excellent drilling performance. You can drill smoothly without broken edges Wide Range of Uses: Diamond core drill bits are very suitable for easy dry drilling on porcelain tile, ceramics, bathroom tiles, marble, granite, stone, bricks and masonry. Using water or oil for lubrication when drilling can extend the service life Compatible Machine: Fit for angle grinders with M14 threaded spindle, Recommend 6000 RPM, Max 11000 RPM (Notice: if you want to fit the drill bits on the drill or other machine, you need an adapter, such as SDS Plus , Hex, Round Shank)