The Vevor wet/dry diamond core drill bit is designed for drilling through tough materials including concrete, red brick, and foam brick. It features a 2.5" diameter, 9.5" maximum core depth, and a 5/8"-11 inner thread for use with standard handheld drilling equipment. Built with a diamond-grit head and laser-welded construction, it is made for stable cutting performance and long service life. The included pilot bit helps improve drilling accuracy, and the included saw blade adds extra cutting versatility.