SDS-max Pro 4 / 22 x 320 mm. Unmatched destructive power with an extremely robust and aggressive solid carbide cutting edge. A consistently long lifespan is ensured by a short head with large-volume dust channels that allow for frictionless removal of drill dust, thereby minimizing heat generation. The highest drilling speed is achieved with angled secondary cutting edges that provide aggressive drilling progress. A drilling-active centering tip ensures optimal centering and precise guidance when drilling in concrete and reinforced concrete. Exact drill hole diameters are guaranteed by an innovative wear indicator that serves as a measure of dimensional accuracy. Vibration control is optimized for ideal performance under the toughest conditions on the construction site. Suitable for use in concrete, masonry, and natural stone.