1. Adjustable : Achieve precision with our sink drill bit, featuring a precise depth adjustment counter and scale ring. Simply set the drilling depth to avoid over drilling or insufficient drilling, meeting the precision standards. Ideal for carpenters and professional craftsmen who demand accuracy in their work. 2. Enhanced Drilling Efficiency: Equipped with built in limiters, this woodworking drill bit ensures control over drilling depth, preventing accidental deviations and material damage. 3. Durable Longevity: Made from strength alloy and speed steel, this long lasting sink drill bit offers outstanding wear resistance. Its robust design ensures stability, resists rust, and simplifies maintenance. 4. Easy to Use: With its comfortable and fatigue resistant grip, our countersink drill bit promotes effortless and efficient operations. The compact and lightweight design features an ergonomic handle, while the 1/4 inch hex shank is compatible with most power tools, ensuring easy setup for your convenience.