SDS-plus Pro4 premium hammer drill, 25.0 x 450 mm. This drill features intelligent geometry and quality craftsmanship for long service life, precise drill holes, and maximum smoothness even under tough conditions. It offers maximum safety with optimum symmetrical head geometry and four solid carbide cutting edges, preventing it from hooking during reinforcement hits. For diameters up to 10 mm, it includes an innovative, welded solid carbide head for enhanced service life and larger dust outlets for increased drilling speed. Power Breakers create microcracks in the material for noticeably faster drilling progress. The low-vibration design includes a 4-helix Variospiral, with two large-volume spirals that efficiently remove drill dust from the hole, while two reinforced spirals provide additional safety and stability. Made from high-quality special steel, it is extremely durable and offers a very long service life, allowing for up to 50% more circular drill holes suitable for dowels. Ideal for professional use in the hardest natural stone, concrete, and masonry.