10PCS Diamond Glass Drill Glass Ceramic Marble Hole Drill  6-30MM<br>Opening neatly， smooth， no broken edges， no tremor situation<br>   Small incision resistance， improve the speed of opening， easy to decorate and remove chip after notching  Suitable for          thick glass， ceramics， tiles， marbl\/granite and other hard and brittle materials   <br>SpecificationMaterial:DiamondDiameter: 6\/8\/10\/12\/14\/16\/18\/20\/22\/30mmAttention: This product work with 3.2 drill chucksScope:Rechargeable drill， impact drill， bench drill and other drilling machines.<br>Package1 &amp;times; Glass Drills Set<br>Diameter: 6mm， 8mm，10mm<br>Diameter: 12mm<br>Diameter: 14mm<br><br>Diameter: 16mm<br>Diameter: 18mm<br>Diameter: 20mm<br>Diameter: 22mm<br><br>Diameter: 30mm