Advanced Diamond Technology: This Drilax 4 inch diamond drill bit is engineered with advanced bonding technology, permanently adhering industrial diamonds to a solid steel body for significantly longer tool life and superior cutting performance. True 1-3/8 Inch Cut Depth: Boasting an impressive 1-3/8 inch depth of cut, this bit offers 30% more depth than standard diamond drill bits, making it perfectly capable of cleanly drilling through even the thickest kitchen countertops, large format tiles, and slabs in a single pass. Ideal for Major Installations: The 4-inch diameter is specifically designed for creating precise, clean holes required for recessed lighting fixtures, shower valves, toilet cutouts, and other large drain or pipe installations through various hard surfaces. Versatile Multi-Material Performance: Achieve exceptional results on a wide range of hard materials including glass, ceramic, porcelain, granite, quartz, and all types of tile, making it an indispensable tool for diverse projects. Essential for Wet Drilling: For optimal performance, maximum bit longevity, and to achieve the cleanest, chip-free cuts, water cooling is essential during drilling. Always use water to keep the bit and material cool. Robust Construction & Easy Handling: Features a standard 3/8 inch shank compatible with most electric and cordless drills. Its solid steel body spins true and includes side slots for enhanced cooling and efficient material extraction, ensuring reliable, smooth operation. Drilax 4 Inch Diamond Drill Bit: Precision for Recessed Lighting, Shower Valves, Toilet Cutouts & Thick Countertops Introducing the Drilax 4 Inch Diamond Drill Bit, your go-to tool for drilling precise, clean, and extra-large holes in hard materials. Engineered with advanced diamond bonding technology, this drill bit features industrial diamonds permanently adhered to a solid steel body, delivering significantly longer tool life and exceptional cutting power for all your demanding projects. Engineered for Unrivaled Depth: One of the standout features of this diamond drill bit is its impressive 1-3/8 inch depth of cut. This provides 30% more cutting depth than conventional diamond bits, ensuring it can effortlessly drill clean, precise holes through even the thickest kitchen and bathroom countertops, large format tiles, slabs, and other demanding materials in a single pass. The Ideal Solution for Major Plumbing, Lighting & Large Pipe Openings: The 4-inch diameter is meticulously chosen to be the perfect size for a variety of significant installation applications: Recessed Lighting: Ideal for accurately installing recessed lighting fixtures in ceilings or other surfaces, allowing for professional and seamless integration. Shower Valves & Toilet Cutouts: Create precise holes for shower valves in bathroom walls and for toilet cutouts in floor tiles, ensuring proper plumbing fixture installation. Large Pipes & Drains: Perfect for main drain pipes, HVAC ventilation ducts, exhaust fan installations, and other substantial conduits in plumbing and construction projects. Superior Versatility Across Hard Materials: Whether you're a professional tradesperson or a dedicated DIY enthusiast, this diamond drill bit excels on a wide array of challenging surfaces, including: Glass Ceramic and Porcelain Tiles Granite and Quartz Countertops Various types of Stone Robust Design & Essential Wet Use: This diamond hole saw features a standard 3/8 inch shank, ensuring compatibility with most electric and cordless drills. Its solid steel construction provides superior stability, while integrated side slots enhance cooling and facilitate efficient material extraction. For optimal performance, maximum bit longevity, and to achieve the cleanest, chip-free results, water cooling is essential during every drilling operation. Experience the ultimate precision, durability, and efficiency. The Drilax 4 Inch Diamond Drill Bit is your indispensable tool for tackling the toughest drilling challenges with confidence and achieving flawless results on every project.