ForgeMaster Tile Max Drill Bit features a triangular shank which removes the risk of drill seizure, with a diamond ground tungsten carbide tip for exceptional hardness and strength. The bit has been heat treated and sand blast finished for long lasting durability, and the innovative tip brazing method prevents tip loss even on extremely hard substrates. The specialist flute design of the drill allows for effective extraction of dust, and water cooling is not necessary due to the drill bit's efficiency at low speeds. The bit is suitable for use with drill driver machines on all tiles, including granite, marble and porcelain - even class 5. This ForgeMaster Tile Max Drill Bit is 6.5mm in diameter and 100mm in length.