SDS-plus-7X Hammer Drill Bit. Diameter: 15 mm, Spiral Length: 200 mm, Total Length: 265 mm. Contents of the sales packaging: 1 piece. It features a 4-cutter made of solid carbide with three times the lifespan in reinforced concrete. The extremely sharp 90-degree centering tip ensures deep and stable centering. Large dust removal channels and a 4-spiral design allow for quick dust removal and the highest drilling speed. The solid carbide 4-cutter offers exceptional durability and resistance in reinforced concrete.