For use with SDS+ rotary or percussion drills. Tungsten carbide tip for extra long life. For clean, accurate fixing and clearance holes, choose this Toolpak masonry drill bit - it's designed with a tungsten carbide tip to offer fast and easy drilling, and an extra long life. Suitable for use with SDS+ rotary or percussion drills, the bit delivers professional results in concrete and masonry. Drills clean, accurate fixing and clearance holes. For use with SDS+ rotary or percussion drills. Tungsten carbide tip for extra long life. Clean and fast drilling in concrete and masonry. Fluted helix ensures rapid dust removal.