DT DIATOOL Diamond Core Drill Bit Finger 68mm for Drilling Enlarging Holes of Porcelain Tile Marble Artificial Stone

Diameter 68mm, 5/8"-11 Thread. Diamond height of drill bit: 5mm, grit #35/40; Diamond height of finger bit: 30mm, grit #70/80. Total length: 60mm; Workable length: 35mm. Drilling, cleaning, enlarging and shaping the holes of porcelain tile, ceramic tile, marble, artificial stone. Dry or wet use. Wet use can prolong the work life. Applicable machine: 5/8" arbor grinder. Recommend RPM: 6000. Maximum RPM: 11000. Please buy an adapter like sds or hex adapter if you need to install this drill bit on the hand drill. Don't use the hammer mode. Save money tool. Just use one core bit, you can drill holes and round out corners or edges and inside holes. Vacuum brazed technology.Longer life than electroplated diamond tools. Diamond are firmly brazed on the matrix. High quality steel and diamond, stable work and higher efficiency.