SDS-plus Pro 4 Premium Hammer Drill, 10.0 x 455 mm. Intelligent geometry and quality down to the smallest detail ensure a long lifespan, precise drill holes, and maximum smooth operation, even under the toughest conditions. Maximum safety is provided by the optimal symmetrical head geometry with four solid carbide cutting edges, which prevents jamming during reinforcement impacts. Up to a diameter of 10 mm, the innovative welded carbide head offers maximum durability and larger dust outlets for improved drilling speed. Power breakers create micro-cracks in the material for noticeably faster drilling progress. Vibration-free drilling is achieved through a 4-helix variable spiral design. Two large-volume spirals effectively and quickly remove drill dust from the hole, while two reinforced spirals add safety and stability. The drill is extremely break-resistant due to high-quality special steel and offers a very long lifespan for up to 50% more circular drill holes suitable for dowels. Ideal for professional use in the toughest natural stone, concrete, and masonry.