Buy cheap granite diamond core drill bits from Chinese factory
This vacuum brazed protective teeth dry use diamond granite core drill bits are designed for drilling granite and hard stones. It's vacuum brazed barrel can effectivly protect the diamond core bit segment and extend its lifespan. The turbo core bit segments can remove the chipping and enhance the drilling efficiency. It's very popular in American and European markets.
These high quality dry use granite core drill bits are engineered for exceptional footage and fast/aggressive drilling characteristics. We adopt the industrial grade diamond powder and Cobalt powder to produce our diamond core bits, so our diamond core bits have a stable drilling performance and superior lifespan. High diamond content yields excellent life and drilling efficiency through heavily reinforced concrete, marble, granite, refractory brick and other hard materials. We use the grade A quality steel tube to ensure the drill bits run precisely.
