reamer bits

Diamond Edge Bits

17 1/2" milled tooth tricone bit

Tungsten carbide insert (TCI)bits

huanyu hole opener bits

7 blades pdc drill bits for coal mining

5 blades diamond bit

PDC cone bits of all size

8 1/2" TCI tooth tricone bits/ roller cone bits

kingdream 617 tci tricone bits

huanyu three cone bit for coal mining

kingdream 517 tci tricone bits