Special Features:Rotary hammer drill with fixed carbide-precision cutting edge in a special alloy, hardened at one thousand degrees and HST heat-treated for extreme resilience. Drills made of chrome-nickel steel, suitable for all rotary hammer drills with SDS-plus chucks from AEG, B+D, Bosch, Fein, Hilti TE (TE 1, TE 5, TE 15, TE 15e, TE 24, TE 25), Metabo, Hitachi, Makita, etc. for: granite, concrete, pavers, stone, walls, hard tiles, marble. With recognition from the German institute for HM hammer drills used for dowel holes.Technical Data:material: chrome-nickel steel drill chuck: SDS-plus drill length: 115 mmcutting edge: carbide cutting tip: 4-edged drill diameter: 5 mmworking length: 50 mm