The Weha Blitz High - Speed Dry Diamond Core Bit is a top - notch tool for drilling in granite, marble, quartzite, quartz, engineered stone, concrete countertops, and all natural stones. It has diamonds both inside and outside the barrel, which significantly reduces drag, heat, and friction. With high diamond content segments, it can drill a hole in 3cm granite in under 30 seconds at 10,000 rpm. This core bit is ideal for granite and engineered stone countertop faucet hole drilling. It can be used dry on job sites for various tasks like faucet installation, sink corner work, and creating radius holes. Just screw it onto a Makita, Metabo, Hitachi, or other grinders and drill fast. For in - shop wet use, attach it to an air polisher or electric wet polisher and run at least 4,000 rpm. The double vacuum - brazed diamonds on the inside and outside of the barrel promote faster drilling and allow hole enlargement. The fully exposed diamonds at the start prevent the bit from walking. It can drill 60 - 150 holes per bit depending on usage. It's competitively priced considering its high - quality metal core, premium diamond matrix bond, speed, and long life. Run it at 10,000 rpm for optimum drilling. It's 4' in total length and has a 5/8 - 11 thread, and can be used either dry or wet.
Using the Weha Blitz High - Speed Dry Diamond Core Bit is easy. For dry use on job sites, screw the bit onto a grinder like Makita, Metabo, or Hitachi. Turn up the rpms to drill holes quickly. It's great for tasks such as installing faucets and working on sink corners. For wet use in the shop, attach it to an air polisher or electric wet polisher and run at least 4,000 rpm. When starting to drill, make sure the bit touches the stone firmly to prevent it from walking. You can enlarge holes by using the bit like a vacuum - brazed zero - tolerance wheel. As for maintenance, after each use, clean the bit to remove any stone debris. Store it in a dry place to prevent rust. Keep in mind that the number of holes it can drill depends on the material's thickness, hardness, and abrasiveness. Run it at 10,000 rpm for the best drilling results.
