Our SHOCKWAVE Impact Duty carbide hammer drill bits a redesigned with sharpened carbide to deliver up to 9X longer life and 4X faster drilling into concrete. Engineered with a precision ground tip, these bits deliver faster starts and less walking in concrete, brick and block. Wide flute design removes dust faster, reducing heat and delivering more holes per charge. Equipped with a 1/4 in hex shank, Milwaukee SHOCKWAVE Impact Duty carbide hammer drill bits are the ideal solution for drilling in masonry materials with both impacts and hammer drills/drivers. Available in diameters up to 1/2 in.SHOCKWAVE Impact Duty engineered for hammer drills and impactsSharpened carbide edges for faster starts and less bit walkingPrecision ground carbide tip design for up to 4X faster speeds in concreteWide flute design for fast, efficient dust removal and more holes per charge1/4 in hex shank for added tool versatilityRobust carbide for up to 9X life in concrete