Bosch SDS-plus-5X drill bits are specially designed with a centring tip for active and accurate centring in concrete. They have a 4-cutter geometry that prevents jamming in rebar and the drill bit tip does not break off. They have a 4-flute design for fast dust removal giving higher drilling speeds and longer life. · · · Centring tip for active and accurate centring in concrete · · The asymmetrical drilling head design is unique, ensuring outstanding dust removal and reduced wear · · 4-cutter geometry prevents jamming in rebar · · The drill bit tip does not break off