Diamond drilling crown "Dry", 82 mm, M14. M14 thread for use on angle grinders. Vacuum brazed diamonds for a long lifespan and fast drilling progress. Side cutouts for easy removal of the core. Designed for dry applications, no additional cooling required. For consecutive drilling, it is recommended to briefly cool the crown with water after each drilling. The recommended working 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 for brief cooling. Important: Do not drill into the substrate when the material is laid.