Diamond-grit hole saws are specially designed for precise and clean drilling of porcelain stoneware, hard tiles, and other mineral materials. Thanks to their high-performance diamond coating, they guarantee excellent longevity, even on the most abrasive materials. Their design allows easy centering and clean cutting without chipping, ideal for sanitary or electrical installations. Available in several diameters, they are used with drill or grinder depending on the models, with or without water cooling, according to recommendations.