4.5" Wet Type Core Bit Diamond Tip BLUEROCK BRAND Thread Type: Industry Standard 1 1/4" (Directly fits our BLUEROCK Z1 Core Drills) Overall Length: 17” Approximate, Inside Barrel Depth: 14.5" Wet core drilling through concrete, rebar reinforced, asphalt, rock, stone, tile masonry See the BLUEROCK brand page for discounted diamond core bit sets and all sizes NEW - 4.5" BLUEROCK TOOLS DIAMOND WET CORING BIT FOR CORE DRILL. Outside Bit Diameter: 4.5" Overall Length: 17" Approximate Inside Barrel Depth: 14.5" Approximate Thread Type: Industry Standard 1 1/4" (Directly fits our BLUEROCK Z-1 Core Drills) Note to b