The Dynaplug Replacement Plugs - Sharp Point MTB 5 Pack contains sharp‑point viscoelastic rubber plugs with non‑abrasive brass tips designed for rapid tubeless tyre repairs; insert each plug directly into the puncture after removing the object for a repair that can last the life of the tyre, no sealant needed, and use only with Dynaplug Air, Racer, Megapill, Megaplugger, or Micro Pro/Pill tools.