Features: 1.High Performance: Commonly used to easily and properly replace the valve springs or valve stem seals, the air pressure helps prevent the valve from falling into the combustion chamber. No need to take the cylinder head off while used. 2.PREMIUM QUALITY: Made of top quality copper and rubber, impact & wear resistance, sturdy and durable. High precision and hardness ensure long-term reliable service. 3.Powerful Functions: Heavy duty 12" flexible hose allows easy access to spark plug hole and air supply. 4.Application: .
