New Dry Diamond Drill Bits for Porcelain Tile Granite M14 thread Diameter 6mm to 68mm

Specification: Diameter: 6mm,8mm,10mm,20mm,25mm,35mm,50mm,68mm Total Length: 60MM; Diamond height 10MM M14 Female Thread (That is very important for your machine) Machine: Angle Grinder... Application: Worked great for dry/wet drilling holes through porcelain tile, granite, marble, stone, Masonry, brick.. Feature: 1.Advanced vacuum brazing technology,greatly improve the performance of the product and working life;              2. High quality core steel helps to be more efficient and durable, not easy to deform, appropriate drainage tank design make the drilling fast and stable, good for chip removal;              3. The top of the bit is made of high quality diamond, which is closely arranged, with high exposure and longer service life;              4. U-groove tooth shape, cut sharper, help for chip removal;              5. 6-10mm with wax inside, dry drilling without water; When drilling, the wax will melt to lubricate and cool the drilling surface;              6. The drilling eff