With the Carat Brilliant diamond core bit eb 56 x 420mm, you drill clean and fast holes through reinforced concrete, standard concrete, and hard natural stone. The laser-welded tt segments deliver superior joint strength and prevent segment loss during demanding wet drilling jobs. Continuous water cooling prevents the core drill from overheating, keeps cutting performance consistent, and significantly extends the tool's working life. With a 56 mm diameter and a usable length of 420 mm, you can easily create deep penetrations for plumbing, drainage, and utility pipes. The bit connects directly to compatible diamond drilling machines via its 1/2"G female thread.