Designed to be ultimate carbon fiber air system, the First Strike Hero 100 Carbon Fiber tank features a whopping 100 cubic inch 4,500psi capacity for heavy gunners who need the ultimate air system, a tool-free rotational regulator for the perfect fit attached to any paintball gun, a lifetime-use bottle with 5 year hydro date and adjustable output pressure from the nickel-plated brass regulator. Light, versatile and packed with features, this First Strike air tank is an outstanding choice for the serious paintball player!