SDS-Plus Pro4 premium hammer drill / 32.0 x 450 mm. Intelligent geometry and quality down to the last detail for long service life, precise drill holes and maximum smoothness even under the toughest conditions. Maximum safety due to optimum symmetrical head geometry with 4 solid carbide cutting edges, which does not hook in case of reinforcement hits. Up to Ø 10 mm: with innovative, welded solid carbide head for maximum service life and larger dust outlets for highest drilling speed. Power Breakers cause microcracks in the material for noticeably faster drilling progress. Low-vibration drilling due to 4-helix Variospiral. 2 large-volume spirals reliably remove the drill dust quickly from the drill hole, two reinforced spirals provide additional safety and stability. Extremely unbreakable due to high-quality special steel. Very long service life for up to 50% more circular drill holes suitable for dowels. For professional use in hardest natural stone, concrete, masonry.