Versatile application for both dry and wet drilling on ceramic tile, marble, and slate, making this core drill bit suitable for a wide range of project requirements and environments. Clear size identification with etched diameter markings for quick, easy selection. Available in 40 mm, 45 mm, and 50 mm to match your specific drilling tasks. M14 thread compatibility for angle grinders. Specifically designed to deliver precise hole placement for sink and washbasin installations, improving accuracy in countertop applications. Efficient chip removal with side chip removal holes. facilitates faster waste discharge and enhances drilling efficiency, helping to keep your workspace cleaner during operation. Practical use scenarios Installing an undermount or abovecounter sink in a stone or tiled countertop. Use the appropriate 40/45/50 mm size and your M14 angle grinder to achieve a clean, accurately positioned hole. Creating largediameter openings in ceramic tile, marble, or slate for plumbing passes, faucet connections, or drainage lines in kitchen or bathroom renovations. Dry or wet drilling on tiled surfaces where precise hole placement and reduced chipping are important, such as bathroom vanity projects or backsplash updates.