Side cutouts for easy removal of the drill core. Designed for dry use, no extra cooling required. For diameters of 6-14 mm, a paraffin emulsion is additionally integrated into the drill for better cooling. It is recommended to briefly cool the crown with water after each consecutive 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 hole more frequently to allow it to cool briefly. Important: Do not drill into the substrate when the material is laid.