Helps you to quickly and easily inspect engine compression on both 4 stroke and 2 stroke engines.
 Features:
  - Redesigned and improved billet gauge manifold with integrated pressure release valve.
  - Easy to read precision 0-300psi analog gauge with protective rubber boot.
  - Hose and adapters included for 10 mm, 12 mm and 14mm spark plugs.
  - Integrated quick disconnect fitting for easy hose installation and removal.
  - Nylon storage pouch.