With the Bosch pro dry diamond core cutter, you can drill clean, large-diameter openings in masonry, brickwork, and sand-lime brick without creating water slurry. This makes it the ideal choice for installing 125 mm ventilation pipes, extractor ducts, and hvac conduits in occupied or finished spaces where wet drilling is not practical. Featuring 6 robust diamond segments with a height of 7 mm, it provides dependable cutting performance and long-lasting durability. With a 127 mm diameter, a 150 mm working length, and a standard g 1/2" female threaded connection, it attaches securely to your compatible diamond drill for efficient, controlled coring.