SDS-plus Pro 4 premium hammer drill / 13.0 x 310 mm. Intelligent geometry and quality down to the last detail ensure long service life, precise drill holes, and maximum smoothness even under the toughest conditions. Maximum safety is achieved with optimum symmetrical head geometry featuring four solid carbide cutting edges, which prevents catching during reinforcement hits. For diameters up to 10 mm, the innovative welded solid carbide head provides maximum service life and larger dust outlets for enhanced drilling speed. Power breakers create microcracks in the material for noticeably faster drilling progress. Low-vibration drilling is facilitated by a 4-helix Variospiral design. Two large-volume spirals efficiently remove drill dust from the hole, while two reinforced spirals offer additional safety and stability. The drill is extremely durable due to high-quality special steel, providing a very long service life with up to 50% more circular drill holes suitable for dowels. This product is designed for professional use in the hardest natural stone, concrete, and masonry.