Side cutouts for easy removal of the drill core. Designed for dry use, no additional cooling required. For diameters of 6-14 mm, a paraffin emulsion is integrated into the drill for better cooling. For consecutive drilling, it is recommended to briefly cool the crown with water after each drilling. The recommended usable length is the thickness of the tile, porcelain stoneware, or granite slab, typically a maximum of 2 cm. Granite slabs or countertops can be drilled up to 5 cm. In this case, the crown should be pulled out of the drill hole more often to allow for brief cooling. Important: Do not drill into the substrate when material is laid.