GEARHOOK 02-200 Core Cutter Drill Bit 9 Inch Long Extension Rod Adapter 1-1/4" UNC Black Drill Bit Guage

This core cutter drill bit extension rod is used for drilling rigs. This core cutter is 9-inch in length. Extension for core cutters with 1-1/4" UNC fitting as of diameter 45 mm. Heavy-duty, multi-purpose 9-inch core drill bit shaft extension rod for core drilling rigs. Shafts will fit most core drills. Will work with wet or dry bits. All shaft extensions have 1-1/4 in. x 7 threading.