The SDS plus-7X drill bit offers excellent durability when drilling in reinforced concrete. Its 4-cutter solid head is made of the highest quality carbide, which reinforces the head and provides exceptional impact resistance. Its continuous distribution of the drilling force guarantees that no loss of power occurs, thus increasing the overall service life. Bosch's unique Diffusion Welding Technology (IDS) provides strong hold between the head and neck. In addition, the 4-spiral design with wide channels reduces wear on the drill bit by ensuring effective removal of drill dust. This drill is designed for use with hammer drills in masonry, concrete and reinforced concrete. It is compatible with hammer drills with SDS plus system.