With the Carat Brilliant diamond core bit HDNL132422, you drill smooth and controlled dry holes through brickwork, masonry, and abrasive building materials. Featuring a 132 mm diameter and a working length of up to 420 mm, you easily create clean wall penetrations for ventilation ducts or waste pipes without edge splintering or heavy chisel damage. The laser-welded diamond segments ensure an immediate grip and steady coring progress. Thanks to the standard 5/4" unc connection, you securely attach the bit to compatible diamond drill motors with dust extraction, allowing you to finish every installation quickly and efficiently.