Chinese Supplier Surface Set Diamond Drill BitSurface-Set Diamond Bits are set with a singular layer of natural or synthetic diamond utilizing a hard matrix compound on the face of the bit. The diamond set design ensures sufficient overlap to prevent premature wear of the matrix.Surface-Set diamond......



B, N, H, P Locking Coupling Tanged, Adapter Coupling
B, N, N-3, H, H-3, P Fluted/Slotted Core Lifter
B, N, H, P Recovery Tap Right Male Left Male
B, N, H, P Surface Set/Impregnated Diamond Drill Bit Core Drill Bit
Od19.05*13.2mm Heat-Resistant Polycrystalline Diamond Layer PDC Drill Bits
Hjg DTH Bit - HD85 ( DHD380 , COP84)