TheDynaplug Megaplug Nozzle Kit works with either the MTB or the Road versions of the Dynaplug Air system. Dynaplug Megaplug Nozzle Kit Features Megaplug nozzle kit for the Dynaplug Air system, works with either the MTB or the Road versions of the air system Includes Megaplug Air insertion tube and 4 x Megaplugs. More info