Motion Pro 08-0651 Compression Tester with 10mm, 12mm and 14mm Adapters

Helps you to quickly and easily inspect engine compression on both 4-stroke and 2-stroke engines. 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 10mm, 12mm and 14mm spark plugs. Integrated quick-disconnect fitting for easy hose installation and removal. Nylon storage pouch.