The SPERO diamond core drill with a diameter of 57 mm is designed for dry drilling applications in concrete and stone where water cooling is not desired. With an effective drilling length of 350 mm and a 1 1/4 UNC internal thread connection, this high-quality diamond tool features a milled spiral on the drill tube that allows for efficient dust removal and cooling while providing additional space for drilling debris. The soft impact design makes it suitable for drilling in reinforced concrete, channel slabs, aerated concrete, and various stone materials without water cooling when used with compatible drilling techniques. This diamond core drill requires drilling machines with a soft impact function and internal dust extraction systems for optimal dry operation. Compatible machines include models with special micro-impact functions and 1 1/4 external thread connections. The seamlessly drawn drill tube construction ensures exceptional stability and professional performance characteristics. For extended service life, operation from a drill stand is recommended, along with periodic re-sharpening using a grinding stone. The drill can also be used with water cooling in all types of stone materials, providing versatility across various drilling applications. The laser-welded diamond segments and precision manufacturing deliver reliable performance in demanding construction site environments where dry drilling is necessary, such as in inhabited buildings, ceiling work, or in areas with water usage restrictions. Proper dust extraction with an M-class vacuum cleaner with impact function is essential for efficient dry operation and work safety.