SDS-plus Pro 4 Hammer Drill / 16.0 x 800 mm. The highest drilling speed is achieved by reducing friction and improving impact transfer through a special cutting geometry on the chisel-like drill head. The stable and durable center ensures precise drilling. Power breakers create micro-cracks in the material for noticeably faster drilling progress. Enlarged reinforcement phases reduce the likelihood of getting stuck when hitting reinforcements. The large-volume 2-spiral helix geometry with core reinforcement allows for quick removal of drill dust and maximum break resistance. Suitable for use in concrete, masonry, natural stone, and granite.