<![CDATA[EC21 Product Catalogs - pdc coring bit]]> <![CDATA[NW BW HW PW PDC Diamond Core Bit for Water Well/Gas/Blast Hole Drilling]]> <![CDATA[PDC Core Bits, PDC Coring Bits, BQ NQ HQ PQ PDC Bits, NQ3 HQ3 PQ3 PDC Core Bits]]> <![CDATA[Diamond Oil Drill Bit 5 Blades PDC Core Drill Bits 1 Year Warranty]]> <![CDATA[8 1/2]]> <![CDATA[2015 Hot Sales Api Standard 12-1/4]]>