DT DIATOOL Diamond Finger Bit Coated Milling for Tile Grinder Enlarging Polishing Holes on Porcelain Ceramic Granite Marble Countertop Diameter 15mm, M14 Thread

【Size】Diameter 15mm, work length 50mm, total length 75mm. Diamond Grit #50/60,M14 Thread. 【Save Money Tool】With just use one finger bit, you can enlarge, shape or round an existing holes to more different sizes holes. Vacuum brazed technology provide high efficient working and longer life.Save your money and time. 【Machine】Used on M14 standard grinder. Easy to operate. Recommended RPM: 6000; Maximum RPM 11000. 【Applicable materials】Porcelain tile, hard ceramic, marble, granite or other natural stone. Dry or wet use. 【Recommendation】Please do not use it to drill holes directly, it will shorten their work life.