Hammer drill SDS-plus-7X. Diameter: 8 mm, spiral length: 100 mm, total length: 165 mm. Contents of the sales packaging: 10 pieces. It features a 4-knife cutter solid carbide head with three times longer service life in reinforced concrete. The ultimate sharp 90-degree centering tip ensures deep and stable centering. Large dust removal channels and a 4-spiral design facilitate fast dust removal and maximum drilling speed. The solid carbide 4-cutter provides extraordinary lifetime and resistance in reinforced concrete.