FACHLICH Diamond Drill Bits - 4/5" Ceramic Tile Drill Bits 20mm Granite Bit with Hex Shank Connection for Granite Marble Tile Porcelain Ceramic

Size Diameter 20mm, Total Length 80MM, Diamond Height 10mm, ConnectionHex Shank. Diamond Grit 35 40. Please see pictures for more details, Application This kind of drill bit works great for drilling tile ceramic granite marble stone, etc. Dry drilling without water, Why choose us Vacuum brazing technology provides longer service life than electroplating technology typically 3 5 times. More Heavy Duty and Wear Resistant than electroplated ones. Vacuum brazing is the most effective and precise way of making diamond tools. It makes the industrial diamond grains permanently brazed to the edge of steel core, creating an unbreakable and extremely heat resistant segments, Feature High concentration High grade diamond provides a faster and more aggressive drilling. Less Chipping, Minimizing breakage, less heat generation, Better finish quality. Save your money and time, Machine Suitable for various drilling rigs. Compatible with most angle grinder driller, please use the adapter to switch freely between the two machines. Easy to operate. If you have any problem when you use the product, please feel free to for satisfactory