With the Carat Brilliant eb diamond core drill bit, you drill clean and fast through reinforced concrete and hard stone. Designed for wet drilling with a 71 mm diameter and a 420 mm working length, it is ideal for creating deep penetrations for plumbing, drainage pipes, and conduits through thick floors and structural walls. The laser-welded tt segments enable a fast, smooth start while protecting against segment breakage during heavy drilling tasks. Continuous water cooling prevents overheating and keeps segment wear to a minimum. The standard 1/2"G connection mounts securely onto compatible core drilling machines for steady power transfer.