Milwaukee Shockwave Impact Duty Multi-Material Drill Bits Set have been designed with a 2 cutter carbide tip to provide durability along with versatility for drilling into a wide range of tough materials including; concrete, bricks, roof tiles, thin metal, ceramic, tiles, wood, PVC, aluminum, drywall and more Set is equipped with a 1/4" hex shank, these multi-material drill bits are compatible with impacts, drill/drivers, and hammer drills. Multi-Material Drill Bits provides the ideal all-in-one solution for the widest variety of materials, tools, and applications, sizes available from 3 mm to 12 mm Use in hammer mode for faster drilling in masonry and concrete Multi-Material Drill Bits are ideal for drilling through layered materials Multi-Material Drill Bits features durable carbide tips for a wide range of tough applications