The Alpha ZENTRO Masonry range boasts dynamic drilling ability with secondary cutters protecting the drill bit in the event of reinforcement collision|The one-piece, solid carbide tip and patented reinforcing chamfering ensure low vibration and optimum drilling performance when drilling into reinforcing steel|Thanks to optimum 4 x 90ï¾° symmetry, all four carbide cutting edges function evenly and do not seize up on hitting reinforcing steel|Laterial support and maximum possible area of the interface between the carbide and steel body compensate for torsional forces|Centring tip for straight forward spot drilling with pinpoint accuracy|Four symmetrically functioning spiral ridges ensure low, uniform flute wear|Optimised flute core strength ensures low vibration drilling performance and exceptional fracture resistance|The high-volume flute geometry ensures the optimum removal of drilling dust|4 Cutter head prevents seizing when drilling through reinforcing steel|Penetrates through steel deck plate e.g. Bondekï¾® and concrete in one easy process