For drilling reinforced concrete, masonry, natural and artificial stone. Solid piece carbide tip with four cutting faces to prevent jamming in rebar, which also provides cleaner, more concentric holes and a constant high drilling speed. Long helix length with optimized free space for faster debris removal, with optimized heat treatment to ensure maximum strength. Head Type: Carbide Grit, Carbide Grit. Diameter [Metric]: 19 mm. Application Material: Concrete.