High-quality fischer SDS Max IV 25/400/520 hammer drill bit for creating approval-compliant drill holes in concrete, masonry and natural stone. SDS Max holder, 25 mm diameter, 400 mm drill helix, 520 mm total length. Four-edged drill head prevents snagging in the reinforcement. The centre point enables simple and precise drilling. The core-reinforced drill helix ensures maximum energy transfer and guarantees low-vibration drilling behaviour. The PGM®-compliant cutting element guarantees accurately fitting drill holes and fulfils the highest safety requirements.