With the Carat EHSB040000 tile drill bit, you can drill clean 40 mm holes through hard ceramic tiles and natural stone such as marble or granite with ease. Designed for dry drilling on standard angle grinders, it eliminates the mess and setup of water cooling on site. The M14 female thread allows you to screw the bit directly onto your grinder and start working immediately. Integrated cooling slots dissipate heat efficiently during high-speed drilling, protecting delicate tiles from cracking and ensuring long-lasting bit life for all your plumbing pass-throughs.