Utoolmart 70mm Diamond Grit Hole Saw Drill Bit for Glass Ceramics Porcelain Ceramic Tile 1Pcs

Wide Application: This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubrication. Can be used with a standard electric drill Cut perfect circles with these tools, Suitable for Marble, Granite, Tile Ceramic, Stone, Rebar Concrete etc Small incision resistance,feature drilling stably, fast speed, not breaking the border Opening neat, smooth, no broken edges, no tremor phenomenon, chip Easily