Extremely robust and aggressive solid carbide drill head with 4 cutting edges for extraordinary longevity and resistance in the toughest concrete. The wear indicator on both sides of the main plate serves as a gauge for assessing the dimensional accuracy of the anchor holes. The 4-flute spiral geometry with optimized spiral core thickness ensures smooth operation and minimal spiral wear. The optimized spiral core thickness guarantees high breakage resistance and low-vibration drilling behavior. The 90° centering tip allows for precise starting and minimizes chipping at the edge of the drill hole. Ideal for use in reinforced concrete and hard natural stone.