Ideal for creating large, clean openings in a variety of hard construction materials, the 400 mm Diamond Core Drill is designed for wet drilling with a drill rig. It cuts efficiently through reinforced concrete, refractory brick, and dense blockwork. This drill features laser-welded diamond segments for superior durability and a fast cutting rate. Its heavy-duty steel barrel prevents flexing and ensures precision. The drill's 1 1/4" UNC female thread provides compatibility with professional rig-mounted core drills.