Hammer drill SDS-plus-7X. Diameter: 16 mm, spiral length: 400 mm, total length: 465 mm. Contents of sales package: 1 piece. The 4-cutter solid carbide head offers three times longer life in reinforced concrete. It features an ultimate sharp 90-degree centering tip for deep and stable centering. The large dust removal channels and 4-spiral design ensure fast dust removal and the highest drilling speed. The solid carbide 4-cutter provides exceptional life and resistance in reinforced concrete.