The Do it Best Carbide Masonry Drill Bit Set for Concrete is built for durability and efficiency, featuring carbide tips for longer life and an impact-ready design. With a wide flute for fast dust removal and heat dispersion, this 5-piece set ensures reliable performance when drilling through concrete. This 5-piece set includes (1) of each: 5/32", 3/16", 1/4", 5/16", and 3/8".