The SDS plus drill bit-7X offers an excellent service life when drilling in reinforced concrete. 4-Schneider-Vollkopf consists of highest quality hard metal, which the head is reinforced and an extraordinary impact resistance arises. Its uniform distribution of the drill power guarantees that no power loss, which enhances the overall life is increased. The unique diffusion welding technology (IDS) from Bosch offers firm grip between the head and neck.