With the Carat HTM0681504 dry core drill bit, you drill clean and precise 68 mm holes in brick and abrasive masonry. Thanks to dry drilling technology, no water lubrication is required, eliminating messy water and slurry damage indoors. The Turbo Twisted diamond segments provide a smooth, fast start without slipping on the surface. When paired with a Dustec dust extraction system, the built-in extraction slots remove dust immediately to keep your workspace clean and safe. Laser-welded segments deliver exceptional durability and reliability under demanding job site conditions. Featuring an M16 female thread and a usable length of 150 mm, this drill bit is ideal for installing flush-mounted electrical boxes.