Adjustable Guide for 1/8" to 3-1/4" Diameters: This versatile Drilax portable drill guide accommodates a wide range of diamond drill bits and hole saws, from 1/8 inch to 3-1/4 inches, making it suitable for diverse hole sizes and drilling applications. Strong Suction Base for Unwavering Stability: Features a powerful suction base that firmly secures to any smooth, non-porous surface, including walls and floors, providing maximum stability and control for perfectly straight, accurate holes without bit walking or slippage. Removable Ball Bearings & Adjustable Plates: Designed with removable ball bearings for extra steady guiding and adjustable plates, allowing you to configure the guide for specific bit sizes (e.g., one plate face for 1/8" to 1-3/4", flip for 7/8" to 3-1/4"). Integrated Water Cooling & Tool-Free Setup: Includes an integrated coolant water feed hole to keep your drill bit cool during operation. All adjustments are made easily with thumb screws, requiring no additional tools for quick setup and reconfiguration. Master Hard Materials with Precision: Achieve flawless precision drilling in tough materials like ceramic, porcelain, glass, marble, granite, and various stone. Essential for tile installations, plumbing, and countertop projects. Enhance Project Success & Bit Life: Promotes an efficient and cleaner drilling process, minimizing material damage and significantly extending the life of your diamond drill bits by ensuring accurate starts and proper cooling. Pro Tip for Hole Saws (CCW Direction): When using diamond hole saws, drilling in a counter-clockwise (CCW) direction will help prevent the guide's nuts and bolts from coming loose, ensuring consistent stability and safety. Drilax Adjustable Diamond Drill Guide with Suction Base: Achieve Perfect, Straight Holes in Hard Materials Revolutionize your drilling projects with the Drilax Adjustable Diamond Drill Guide with Suction Base, your ultimate tool for achieving precise, straight holes in challenging hard materials. Engineered to eliminate bit walking and slippage, this guide ensures an efficient drilling process and superior results every time, protecting your valuable materials from damage. Unmatched Versatility & Precision Adjustability: This truly remarkable guide is designed to accommodate an extensive range of diamond drill bits and hole saws, from a minimum of 1/8 inch up to a maximum of 3-1/4 inches in diameter. Its innovative adjustable plates and removable (4) ball bearings allow for tailored configurations to fit your specific bit size. Easily switch between plate faces (one for 1/8" to 1-3/4" and another for 7/8" to 3-1/4") for seamless adaptability. Best of all, all adjustments are made effortlessly with thumb screws – no additional tools needed! Rock-Solid Stability with Powerful Suction: Achieve perfectly straight and accurate holes with minimal effort thanks to the guide's robust design. The powerful suction cup base firmly secures to any smooth, non-porous surface, including walls, floors, and countertops, providing maximum stability and control exactly where you need it. Integrated Water Cooling for Enhanced Performance: Extend the life of your diamond drill bits and ensure cleaner drilling with the integrated coolant water feed hole. Simply fill the guide with water, and it will continuously supply essential cooling to the cutting edge, effectively reducing heat, minimizing dust, and ensuring a smoother cut. Master Hard Materials with Ease: The Drilax Adjustable Diamond Drill Guide is an indispensable tool for drilling ceramic, porcelain, glass, marble, granite, quartz, and other tough stone materials. It's essential for a wide range of applications, including: Precise tile installations Plumbing projects requiring accurate pipe or valve holes Clean cuts for countertop modifications Professional Results for Every Project: Designed for both professional contractors and dedicated DIY enthusiasts, this durable and reliable guide provides consistent performance. Enhance your project success and take your craftsmanship to the next level by ensuring clean, accurate, and chip-free holes with ease. For optimal safety and longevity when using hole saws, remember to spin your drill in a counter-clockwise (CCW) direction to prevent any components of the guide from loosening.