Efficient Diamond Core Drill Bit: This diamond stepped pagoda drill bit features a threestage reaming design with a sharp multilayered tip, enabling precise drilling in hard materials such as tiles, mosaics, marble, and engineered stone. It supports hole sizes of 20 mm, 35 mm, and 55 mm. Durable and longlasting performance: Made from quality materials, these diamond core drill bits offer exceptional durability and maintain sharpness after heavy use, providing efficient and clean cutting results. Easy to use: Compatible with most standard drills without the need for special tools or expertise, making it suitable for both professionals and DIY enthusiasts to drill through various materials quickly and accurately. Wet and dry drilling capability: The diamond brazed reamer bit is suitable for both wet and dry drilling, allowing you to choose the preferred method without compromising tool life or performance. Practical use scenarios: Tile and mosaic installation: Create clean, precise holes for plumbing, anchors, or wiring in ceramic tiles, porcelain tiles, or mosaics. Natural and engineered stone work: Drill accurate holes in marble or engineered stone countertops or panels for fixtures, dowels, or passthroughs without cracking. Renovation and remodeling projects: Produce large 20/35/55 mm holes in hard stone surfaces for decorative features, support brackets, or electrical installations.