DT DIATOOL Diamond Milling Bit 10mm Enlarge Existing Holes of Porcelain Tile Marble Countertop Coated Finger

Application: Please don't use it for drilling holes. Mainly used for existing holes; You can use it to enlarge, ream, clean rough holes or repair edge. Also can grind a curved chamfer on the edge of the Package contains 1 peice diamond finger/milling bit. Specification: Diameter 10mm; work length 40mm; total length 65mm; diamond grit #40/50. Machine: Grinder with M14 Thread. Recommended RPM: 6000. Max RPM: 11000. Notice: If you want to use it on hand drill or hammer drill, you need to buy an adapter. Don't use hammer mode. High quality diamond: The #45/50 diamond particles cover the work surface, reducing debris and breakage for a better finish. Recommended materials: porcelain tile, ceramic tile, marble, artificial stone, granite, etc.