Bosch 2608680268 - 7 mm SDS Plus 1 Hammer Drill Bit has an active centring tip for active cutting in concrete. It is highly durable carbide with a good life and wear-resistant. Bosch 7 mm drill bit has a wear mark with a four flute turbo design that is effective in removing more amount of dust. SDS Plus 1 Hammer Drill Bit has a 2-cutter that is AWB Brazing and hardening in nature. It increases the robustness of the drill bit and also decreases the vibration that occurs during the drilling process.