Conical centring tip. Specially designed cutting edge. Wear mark. Solid tungsten carbide head with four-cutter geometry. Stress-optimised flute surface and geometry. Extremely robust and exceptionally durable in concrete and concrete with rebar. SPECIFICATION: . The X5L provides accurate holes, even through rebar, and is particularly durable. The hammer drill bit has a solid tungsten carbide head with four-cutter geometry. This makes it extremely robust. When used with the latest generation of three-joule rotary hammers, it provides an unbeatably long life at a constantly high drilling speed in concrete, especially in concrete with rebar. The main cutter is supported by the secondary cutters during drilling. This causes the concrete to be broken down into smaller particles, making it virtually impossible for the bit to get jammed in concrete with rebar. The result is a fast but smooth drilling action. The drill bit's special conical centering tip guarantees true running and optimum guidance.