Compatibility: This product is suitable for flat glass, glass tiles, ceramic tiles, ceramics, glazed tiles, polished tiles, mosaics, and more. Precision Hole Drilling: Utilizing a carbide-coated hollow drill bit, high-speed rotation and grinding, it creates round holes with smooth edges and precise dimensions on tile surfaces, preventing cracking or chipping. It supports hole diameters ranging from Ø 20-90 mm, meeting various installation requirements (such as large openings for water pipes, faucets, sockets, ventilation ducts, and more). Material: This product is specially designed with carbide for a long lifespan and resistance to damage. Product include a total of 2pcs Tile Hole Cutter, which can completely meet your daily use needs and replacement., Manufacturer: ECSiNG