Hammer drill with SDS plus-7X. The SDS-plus-7X drill bit provides excellent service life when drilling in reinforced concrete. The SDS-plus-7X drill bit offers excellent service life when drilling in reinforced concrete. Its 4-flute full head is made of the highest quality carbide, which strengthens the head and provides exceptional impact resistance. Its continuous distribution of drilling force ensures that there is no loss of power, increasing overall life. Bosch's unique diffusion welding technology (IDS) provides strong hold between the head and neck. In addition, the 4-spiral design with wide channels reduces wear on the drill bit. by ensuring effective drill dust removal. This drill bit is designed for use with rotary hammers in masonry. Concrete and reinforced concrete. It is compatible with hammer drills with SDS-plus system. To achieve precise results. it is possible to tell from the wear marking. whether the hole diameter is still within the tolerance for the dowels. As proof of quality, the drill bears the PGM Masonry Drill Bit Association Board quality test mark. which guarantees conformity to strict tolerances. precise drilling and a firm grip in drill chucks. It is manufactured in Germany.