With the Hikoki 4100519 diamond tile drill bit set, you drill cleanly and without splintering through hard tiles, marble, porcelain, and glass. This 4-piece set equips you with the essential 5, 6, 8, and 10 mm diameters needed for standard wall plugs and mounting fixtures. The shank with 3 flat sides fits standard drill chucks securely to prevent slipping during operation. Thanks to the open core design, you easily eject waste material to keep your workflow moving without interruption. By using continuous water cooling and drilling in rotary mode without hammer action, you protect delicate surfaces and achieve accurate holes every time.