The Hatsan TactAir 6.8L Carbon Fiber Fill Tank 74 cu-ft volume fills at 4500 PSI. The included valve and fill kit complete all equipment necessary to fill your airgun with ease. The fill kit is equipped with a precision gauge for accurate fill pressure monitoring. The fill whip is equipped with a quick disconnect end, making this kit compatible with a wide variety of airguns. A Hatsan fill probe adapter is also included for use with Hatsan airguns.