With the Carat Brilliant Dustec HTM0921504 core drill bit, you drill cleanly and efficiently into brick and abrasive masonry. Featuring a 92 mm diameter, a 150 mm working length, and an M16 female thread connection, it is ideal for installing pipe penetrations and back boxes. The turbo-twisted diamond segments ensure an effortless start and fast cutting speed without water cooling, preventing indoor water damage and slurry. Laser-welded segments deliver outstanding strength against heavy stress and tooth breakage. When used with a Dustec dust extraction adaptor, the slots in the flange extract dust directly at the source, helping you complete every installation or renovation job neatly and reliably.