Feature:1. Made after diamond hot pressing and sintering process, the cutter head is firm, wear‑resistant and durable without loss2. The product come with of sharpness edge, fast drilling speed, long service life3. 1/2 BSP angle grinder drilling is very suitable for drilling ceramics, granite, quartz stone and other materials4. Large chip removal port design can smoothly remove chips during drilling, therefore increase drilling speed5. High quality diamond material possess extremely high hardness and wear resistanceSpecification:Item Type: Diamond Drill BitMaterial: DiamondProduction Process: SinteringColor: BlueDrilling Diameter: Approx. 20mm / 0.8inTotal Length: Approx. 98mm / 3.9inThread: 1/2BSPApplicable Machine: Angle grinderPackage List:1 x Diamond Drill Bit