Tungsten Carbide Inserts TCI Tricone Drill Bit 17 1/2" IADC435
China Tungsten Carbide Inserts TCI Tricone Drill Bit 17 1/2" IADC435, Find details about China Tungsten Carbide Inserted (tooth) Bit, Water Well Tricone Bit from Tungsten Carbide Inserts TCI Tricone Drill Bit 17 1/2" IADC435