Stone Drilling Core Bit 120mm is a heavy-duty diamond drill bit engineered for large-diameter, high-precision drilling in hard materials such as granite, marble, ceramic tiles, porcelain, vitrified tiles, and natural stone. Designed for professional applications, it delivers powerful drilling performance, clean hole edges, and excellent accuracy even on thick and extremely dense surfaces.

Manufactured with industrial-grade diamond segments, this 120mm core bit ensures outstanding durability, heat resistance, and long service life under continuous heavy-duty use. The strong diamond bonding provides stable cutting performance, reduced wear, and consistent results, making it suitable for demanding construction and fabrication environments.

This drill bit is widely used for large pipe openings, drainage systems, ventilation holes, plumbing installations, and decorative stone applications. It performs best with wet drilling, which helps control heat buildup, improve cutting efficiency, and significantly extend tool life.

Compatible with standard drilling machines and angle grinders (with adapter if required), this 120mm diamond core bit is ideal for professional contractors, tile installers, and stone fabricators who require precision, reliability, and smooth drilling performance in large-hole applications.