- Durable Resistance: Our wall core drilling set features a unique hardening process and robust material composition that ensure long-lasting performance. This reduces the need for replacements while providing high wear resistance. - Versatile Applications: Optimized for standard drills, this set is perfect for installing air conditioning units, performing home maintenance, routing pipes, electrical work, and various construction projects, guaranteeing reliable results. - Size Variety: The set includes 9 hollow drills with graduated diameters, allowing for precise hole sizes in concrete. This simplifies projects such as air conditioning installation, ensuring accurate drilling across different wall materials. - Enhanced Drilling Control: Achieve smooth hole walls and minimize deviations with five flutes and two slots. The round shank adapter provides a secure connection, enhancing tool stability for precise operations. Utilize this wall core drilling set for consistent results in residential repairs, installation tasks, and renovation projects. With its exceptional durability and flexibility, it is an essential addition to your toolkit.