Ideal for creating 8-inch diameter holes for large pipes, ductwork, and major service installations, the 200 mm Diamond Core Drill is designed for wet drilling with a drill rig. It cuts quickly and accurately through heavily reinforced concrete and other dense materials. The drill features laser-welded diamond segments for durability and an aggressive cut. Its 1 1/4" UNC female backend is the industry standard for professional rig-mounted core drilling motors.