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The Tru-Cut Quad Tip SDS Max Drill Bit (PMQ100018) is a high-performance masonry bit designed for industrial-grade drilling in reinforced concrete and masonry. Part of the Viper Head series, this bit features a unique quad-cutter design with rounded carbide 'fangs' that are engineered to bounce off steel reinforcement rods (rebar), preventing damage to the bit and allowing the operator to switch to a rebar cutter if necessary.