Product Description ZENTRO PLUS Hammer drill Precise quiet. The PGM test mark is for a perfect fit dowel holes on the long lifetime. Optimised 4x90. Symmetry, four evenly working solid carbide cutting-wear geometry (head coil) for easy centring, drilling point. High volume, beautiful; spiral geometry. One-piece solid carbide cutting geometry; Embedded reinforcement chamfer at each end cutting solid carbide plate and laterally supported. Welding surface of carbide and steel spiral core strength optimised for low-vibration drilling behaviour and extreme breakage True 4-spiralling for optimum drilling dust Uniformly low spiral lock, use: For use in masonry, concrete, reinforced concrete and natural stone. Packing: Individually in SB Packaging Note: ** Predrilling with a short drill bit of the same diameter Set Contains: Zentro Plus rotary hammer drill bit with SDS-plus shank 12x1000 mm