Ideal for large plumbing and ventilation systems, this 102 mm (4 inch) diamond core drill cuts through tough materials like porcelain, concrete, and masonry. It has a durable steel body and a vacuum-brazed diamond cutting edge for use with a high-power angle grinder. The M14 fitting and optimized segment design ensure fast material removal and effective cooling during dry operation, making it a reliable tool for major plumbing and HVAC installations.