The Bosch SDS-plus® Bulldog™ Xtreme Rotary Hammer Bit is longer-lasting, due to its proprietary carbide-bonding technology that provides a stronger bond of the four-cutter head to the bit. The bit provides 4X life in concrete with a rebar. The centric conical tip guides the bit, resulting in rounder holes, which is important when setting anchors or fasteners. The four-cutter head design features less carbide wear than two-cutter bits, making the user more productive. A wear mark alerts the user when the bit has worn to a level where it’s no longer precise. With an optimized flute design for cooler operation, the bit delivers performance in reinforced concrete or harsh aggregate, plus lightweight and normal weight concrete.