1.Versatile Compatibility: Accommodating drill bits ranging from 4 to 83mm, this drilling locator ensures unmatched versatility. Whether you're working on ceramic tiles, glass, or marble, it caters to a wide array of sizes, making it a must-have tool for any professional or DIY enthusiast. 2.Precision Engineering: The innovative design includes precise calibration for accurate drilling. The robust steel construction combined with a fine-tuning knob ensures exact positioning, minimizing errors and guaranteeing perfectly aligned holes every time. 3.Superior Suction Stability: Equipped with powerful natural rubber suction cups, this tool remains firmly fixed to your working surface. This stable positioning allows for effortless and uninterrupted drilling, ensuring safety and preventing any potential mishaps due to slipping 4.User-friendly Operation: Designed with ease of use in mind, this hole locator features intuitive controls and a straightforward setup process. Its convenient locking mechanism and adjustable components simplify operations, making it accessible for users of all skill levels 5.Long-lasting and Reliable: Made from high-quality steel and industrial-grade plastic, this tool is built to withstand rigorous use. The combination of materials ensures a long lifespan, providing a reliable and long-term solution for all your drilling needs, without compromising on performance or accuracy. Use Steps: 1. Mark The Hole To Be Punched. 2. Put The Drill Bit Into The Limit Hole For Positioning, And Press Down The Locking Position Of The Sucker Handle. 3. Tighten The Fixed Position Of The Positioning Shaft And Stabilize The Positioner. 4. Start The Drill To Open The Hole. Color: As Shown Material: Plastic+Metal Package Contents: 1*punch