Centring tip - ensures active and accurate centering in concrete Unique, asymmetric head design ensures highly effective dust removal and slows drill bit wear 4-flute geometry prevents the drill bit from getting stuck in reinforcement. No drill bit breakage 4-flute design - fast dust removal accelerates drilling speed and slows drill bit wear. For all hammer drills with SDS-plus chuck; Each sold item is accompanied by a receipt or VAT invoice at the customer's request diameter: 18 mm length: 450 mm EAN: 6949509227713