Product: PCP air pump Usage: Specifically designed for air gun, air rifle, it can be used as an inflation device with the adapters Specification: Max Pressure: 4500psi/30mpa CLosed Length: 24.4 Opened Length: 42.1 Package Size: 25 x 8.5 x 2.5 Weight: 5.851 lb Pump Chambers: 3 stage..