... price 1.Product :we specializes in manufacturing:Tricone bits,steel tooth bit,milled tooth tricone bit,tungsten carbide insert rock bit,tri ... -cone drill bit ,3 cone bits,rotary bit, TCI tricone bit,PDC drill bit ,diamond core bit,bicenter bit,single ... and ISO certificate3)we are a global wholesale supplier of tricone, and PDC bits and core bits for use in the ...