Drilling through reinforced concrete is a challenging task that demands a lot from hammer drills. Even 4-cutter bits wear out quickly. Changing accessories and purchasing consumables can lead to downtime. The solid carbide head on the EXPERT SDS max-8X is an advanced 4-cutter that is made from a single piece of the hardest metal: it does not jam and shows no weakness when hammer drilling. For construction professionals who regularly drill into concrete and reinforced concrete, such as for heavy anchors or rebar extensions. The Bosch EXPERT SDS max-8X hammer drill offers unparalleled performance, reliability, and durability. It is the ideal EXPERT accessory for SDS max rotary hammers.