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3 special, aggressive driving teeth create micro-cracks in the material to be drilled;Up to 25% FASTER;Centering tip enables easy, precise drilling without running off;Enlarged reinforcement chamfers protect the carbide element when it hits reinforcement and reduce jamming;Conical spiral back: spiral back that narrows towards the drill tip reduces friction and thus increases drilling speed;Ideal for use with cordless hammer drills;Core-reinforced spiral (KVS);Large-volume spiral design for optimal drilling dust transport;Core-reinforced spiral has a vibration-damping effect, the impact energy is better transferred to the drill tip and the resistance to breakage is increased;Made in Germany;SERVICE LIFE: Enlarged reinforcement chamfers and core-reinforced spiral enable higher power transmission, lower vibrations and lower risk of breakage;Set consisting of: Set consisting of: one drill each