The DEWALT Extreme Masonry Drill Bit Set has been engineered to last as twice as long as conventional masonry drill bits. Delivering up to 50% more holes per charge compared to a standard masonry bit providing cleaner, more accurate holes for improved fixing. Constructed from tungsten carbide for a longer life and greater durability. The unique 120° tip design provides an efficient drilling action and reduces walking for greater accuracy. The milled flutes make the drill bits perfect for faster drilling applications.