The Rubi diamond drill bit range is the solution to one of the most delicate situations in tile drilling and fixing. This tile drill bit is suitable to work with electric drills or angle grinders, it’s the ideal tool choice for drilling holes in seconds with its extreme speed, great for creating holes for pipe works when installation bathrooms etc. To be used on the hardest of materials such as porcelain, granite, stoneware and other materials. This tile drill bit is manufactured with vacuum brazed technology to increase resistance to any friction and temperature when in use. The drygres range is available in a variety of diameters.