Daredevil, nailkiller, 1/2″ x 7-1/2″, short auger bit, works in wood, tough on nails, dual cutting edges deliver easier nail cutting & balanced drilling, open-faced flute offers improved chip removal, reinforced tip withstands repeated nail hits, reamer edge provides improved entry & exit hole quality, 9x life with nail hits, 1/2″ diameter, 4″ flute length, 7.5″ length, 7.5″ overall length, .3125″ shank diameter, 5/16″ shank size.