Proven Millions of Times! For use in concrete, masonry and natural stone. On-the-job tests made under extreme conditions confirm that the DreBo Rotary Hammer Drill Bit's design 4 PLUS sets standards in terms of efficiency and performance. This product has proven itself in the shortest possible time on millions of occasions. It has redefined the demands made of a professional rotary hammer drill bit.
The 4 PLUS significantly raised the performance parameters of drilling speed and life expectancy. This considerably reduces the user’s cost per drilled hole. Modern heat-treatment procedures and a special surface finish reduce drill bit wear and improve resistance to bending forces. Constant research guarantees excellent uniform material structure and extremely tough soldered joints.