SDS plus-5X Drill Bit offers highly efficient drilling in reinforced concrete. Geometrical form of the 4-cutter head prevents jamming and breakage for optimal results. ?Turn-angle? head and 4-flute design provide fast dust removal for increased drilling speeds and reduced wear. Fits all SDS plus rotary hammer drills. Diameter (D) mm: 10, Working length (L1) mm: 100.