Daredevil, nailkiller, 7/8" 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, 7/8" diameter, 4" flute length, 7.5" length, 7.5" overall length, .4375" shank diameter, 7/16" shank size.