Ideal for plumbing installations, this 40 mm diamond core drill is used to create holes for shower valves, bath taps, and waste pipes. It features vacuum-brazed diamonds for fast, chip-free cutting in porcelain and stone, and an M14 thread for a direct fit to an angle grinder. An internal wax core allows for efficient dry drilling by providing lubrication and cooling. This tool ensures a precise hole for a secure, watertight installation of plumbing fixtures.