The Strend Pro Premium hole saw set is suitable for cutting all types of hard stone and stone composites, ceramic tiles, marble, stoneware, porcelain, and granite. The top-tier diamond bonding process ensures high resistance to high temperatures and extends lifespan. Extremely easy cutting and high performance when drilling holes. It is perfectly suited for the installation of bathroom fixtures and accessories, installation of cables, electrical wiring, radiators, etc. It can be used with any drill using a suitable adapter. Mounting thread: M14, the diameters of the hole saws are 20, 35, 45, 55, and 68 mm.