Ideal for creating medium-diameter holes in tough materials, the 55 mm Diamond Core Drill is designed for use with a drill rig and for wet drilling. It features laser-welded diamond segments for durability and an optimized configuration for rapid material removal and effective cooling. The drill's robust steel barrel resists flexing for perfectly straight holes. Its 1 1/4" UNC female backend provides a secure, universal connection to professional rig-mounted core drill motors.