7mm Sintered Threaded Bit
The sintered threaded diamond core drills, unlike brazed or plated drills, have diamond content throughout the tip of the drill. The advantages are apparent in the lifespan of the drill, and the speed and efficiency of the drilling. Being different from brazed and plated drills doesn't just stop at the diamond bond though. With sintered drills, it is necessary to have a continuous water feed moving through the center of the drill to prevent both damaging the drill and your work.