SDS-max Pro 4 / 15 x 540 mm. The slim, chisel-shaped drill head allows for quick penetration into the material being drilled. Short spiral entries and large-volume drill dust grooves of the performance-optimized double feed spiral ensure rapid removal of drill dust. The continuous core reinforcement provides stability and resistance to bending. It enables maximum energy transfer from the hammer drill to the drill tip. Suitable for use in concrete, masonry, and natural stone.