Use/Application: Masonry, Reinforced Concrete, Natural Stone and Artificial Stone. Specially designed head geometry for better centre drilling, faster drilling progress, and precision drilling. Canal flute provides effective dust removal for increased endurance and reduced heat friction. To withstand wear the drills are made of high-alloy steel produced with optimised hardening temperature. Immediate centring tip, prevents skidding on smooth surfaces. Special designed cutting head with 4-cutting edges to enable better precision-drilling in reinforced concrete. Optimized 4x90° symmetry makes all four carbide cutting edges work evenly and at the same time. Fits directly into all hammer drilling machines with SDS max holders