1. ADJUSTABLE DESIGN – Featuring an adjustable scale ring, this sink drill bit enables precise drilling depth control, preventing overdrilling or underdrilling, making it for professional carpenters. 2. PRECISION CONTROL – Achieve accurate drilling depth with our countersink drill, equipped with builtin limiters to prevent slipping and distractions. The rotating design minimizes accidental damage risks, while enhanced limiters ensure higher efficiency and safety for results. 3. DURABLE CONSTRUCTION – Crafted from strength alloy and speed steel, this robust countersink drill offers exceptional wear resistance. Its rugged design ensures stability, resists rust, and simplifies maintenance. 4. EASY TO USE – The included 1/4inch hex shank allows effortless installation and removal, complementing the ergonomic design and comfortable grip. Compact and lightweight, this tool ensures smooth, efficient drilling for enhanced convenience and productivity.