NEW - 1-1/4" ADAPTOR TO 5/8" CORING BIT FOR CONCRETE CORE DRILLS- NEW This is a brand new adaptor for concrete coring drills. It adapts 1-1/4" 7NC threads used by most concrete core drills to 5/8" which some coring bits take. This allows you to use 5/8" Bits with a coring drill If you have any questions, please feel free to contact us.
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