DT DIATOOL Diamond Finger Bit 20 50mm Coated Milling for Tile Grinder Enlarging Polishing Holes on Porcelain Ceramic Granite Marble Countertop, M14 Thread

Multi-purpose use: Integrated grinding and chamfering. It can enlarge, chamfer, grind and shape the formed holes, and repair the hole contour and finish.Please don't use it for drilling directly. M14 Thread. Top diameter 20mm, bottom diameter 50mm. A range of 20-50mm and the working length of 57mm meet the needs of different specifications and depths. 60° chamfer angle, ease the chamfer and make the rough holes flat and smooth. Total length 67mm, diamond height 57mm. #50/60 fine diamond particles are all over the working surface, the working surface is processed evenly, and the effect is good. Suitable for M14 Thread grinder, easy to operate; Recommended RPM: 6000. Max RPM: 11000. If you want to mount the product on a hand drill, you need to purchase a separate hexagonal shank or sds-plus adapter. Do not use impact or hammer mode when using the adapter to connect to other drill equipment. Dry or wet use. Used for processing ceramic tiles, porcelain tiles, marble, granite and other materials.