Our Diamond Core Drill Bits M14 14mm x10 are a must-have for any tiling job. This power tools core drill bit is diamond brazed for extra strength and durability, making it perfect for tough tile drilling jobs. With our professional-grade diamond core drill bit set, you can be sure that your project will be completed quickly and efficiently. Enjoy a four-to-six week production-to-delivery timeline when you purchase this set today.