With the Bosch Best for Universal diamond core cutter, you can drill clean, large-diameter holes dry in masonry, sand-lime brick, and standard brickwork. Featuring a 132 mm diameter and a 400 mm working length, it lets you create wide passages for ventilation ducts, flue pipes, and drainage conduits through thick walls without the mess or setup of wet drilling systems. The six laser-welded diamond segments with a segment height of 11.5 mm deliver smooth, rapid cutting progress. Equipped with a standard g 1 1/4" unc connection, this core drill bit mounts securely onto compatible diamond core drilling machines.