Tondiamo 10 Piece Diamond Drill Bits for Tile, Porcelain, Granite, Marble, and Countertop, 1/4 Inch Hex Shank for Rotary Tools, Industrial Grade #36 Diamond Grit with Carbon Steel Body

Industrial-grade Diamond Construction: crafted for precision, these porcelain drill bits feature a high-density 36 diamond grit working layer bonded to a durable 45 carbon steel body; This industrial-grade design is specifically engineered for hard, brittle materials like ceramic, granite, and marble, helping to deliver smooth cuts and reduce the risk of chipping | 10-Piece Contractor Set: this package includes a complete set of 10 tile bits, providing exceptional value compared to standard 2-piece or 5-piece packs; This extensive kit ensures you have the right size on hand for various projects, making it a smart choice for both DIY enthusiasts and professionals needing reliable ceramic tile drill bits | Universal 1/4-inch Hex Shank for Broad Compatibility: each bit features a standard 1/4-inch (6.35mm) hex shank with a total length of 3.8 inches and a diamond segment length of approximately 70mm; This universal size ensures compatibility with most standard drills and rotary tools, allowing for easy, secure installation without needing special adapters for your granite drilling tools | Efficient U-shape Groove for Faster Drilling: designed to enhance workflow, the optimized U-shaped groove facilitates rapid debris removal during operation; This efficient channel helps keep the bit cool and prevents clogging, contributing to improved drilling speed and precision when using your marble cutting bits | Secure Grip for Enhanced Durability: manufactured to reliable standards, each bit features a robust triangular anti-slip shank; This design ensures a firm, slip-free grip in the tool chuck, providing stable torque transmission; This secure fit helps reduce wear on both the tool and the bits, contributing to a longer lifespan for these essential cutting accessories