Versatile drilling applications: This M14 thread core drill bit supports both dry and wet drilling. It works efficiently on porcelain tile, marble, slate, and concrete, offering flexibility for various project environments and requirements. Clear size identification: Each drill bit features etched diameter markings for easy selection, helping you quickly identify the 40 mm, 45 mm, or 50 mm size options to match your specific sink or washbasin installation needs. Precision drilling for sinks: Specifically designed for sink and countertop applications, this core drill bit ensures accurate hole placement with a drilling depth of 36 mm, enhancing the overall installation process for a professional finish. Efficient cutting performance: Engineered with a robust metal construction, this drill bit cuts through tough materials with ease, providing smooth and clean holes while reducing effort during your drilling tasks. Compatibility and use: Designed with an M14 threaded shank for compatibility with standard drill chucks, enabling straightforward use in common drilling setups. Practical use scenarios: Install a sink or washbasin in a bathroom vanity or kitchen countertop by cutting a precise hole in porcelain tile, marble, slate, or concrete. Retrofit or existing sinks that require a clean, accurately sized opening with one of the 40 mm, 45 mm, or 50 mm options. Perform countertop cutouts for undermount or dropin sinks in tile or stone surfaces, ensuring proper depth and fit for a professional installation.