With the Carat HTM1421504 Dustec dry core bit, you can quickly drill clean 142 mm penetrations through brickwork, sand-lime brick, and hollow blocks without the mess of water cooling or slurry. Laser-welded tt segments deliver an immediate start and smooth cutting performance with minimal breakout damage to the material. Thanks to the integrated flange slots, you can easily connect the bit to a Dustec dust extraction system for low-dust drilling in finished buildings and occupied spaces. Featuring a 150 mm working length and a female M16 thread mount, this drill bit is built for installing ventilation ducts and drainage pipes.