3 piece, nail strike bit set, consists of: 1/2″ , 3/4″ & 1″, nail killing wood boring bit, adds extreme durability speed for nail embedded wood, reinforced reamer cutting edges, optimized for wood & some wood with nails combines superior drill speed with engineered nail cutting durability, fully threaded cone tip pulls the bit through wood quickly & effortlessly, contoured paddle design increases speed with faster chip removal, hex shank improves bit grip & allows use with a variety of drill types, premium bit material combined with innovation for great performance & life.