Brazed Diamond Core Bit/Hole Saw for Granite, Quartzite, Marble, Concrete, Porcelain, Ceramic and Other Stones. These vacuum brazed diamond core bits are highly aggressive and capable of drilling smooth, precise holes without chipping on granite, quartzite, marble, ceramic, porcelain tiles, and other types of stones. The vacuum brazed technology ensures these bits will outlast electroplated diamond bits, providing superior longevity. While suitable for dry use, wet drilling is recommended for optimal performance and extended bit life. Effortlessly cut through the toughest materials with these durable, high-quality core bits. Whether tackling home improvement projects or professional construction tasks, these bits are a must-have tool for anyone working with hard surfaces like stone, tile, and concrete. Achieve clean, accurate holes every time with this reliable and long-lasting diamond core bit set.