The Strend Pro diamond milling cutter is designed for enlarging, finishing, and chamfering existing holes in hard tiles, ceramics, stoneware, glass, and marble. It is not intended for drilling new holes. Finished holes reduce the risk of later cracking of tiles, glass, or marble. We recommend milling up and down so that the entire height of the milling cutter is used, ensuring its cooling. It is used for dry milling with an angle grinder (M14 thread). Milling cutter O is 20-48 mm.