HANS Diamond Core Drill Bit is engineered for fast, clean and precise hole drilling in glass, stone, ceramic tile, marble, granite, porcelain, gemstone and crystal. Manufactured with premium industrial diamond coating, our diamond core drill bits deliver high cutting speed, longer tool life and less chipping compared to traditional carbide tools, making them the perfect choice for glass artists, tile installers, lapidary professionals, jewelry makers, stone fabricators and DIY users. These diamond hole saws are designed for wet drilling to reduce heat, protect the cutting edge and extend lifespan, while the optimized diamond matrix ensures smooth cutting performance on brittle and hard materials. Available in multiple diameters to fit most rotary tools, Dremel tools, hand drills and drill presses, our Diamond Core Drill Bits provide superior drilling accuracy, cleaner hole edges and professional results for every project.