The Zex 15 lb Nitrous Bottle with Valve is compatible with most nitrous systems. The 15 lb design is larger than most 10 lb bottles and is perfect for people who want or need some extra capacity. Whether you're adding a bottle, want an extra bottle for quick swaps when its time to fill, or even have another brand of nitrous kit and like the look/design of the Zex bottle, this bottle will meet your needs! The bottle features a high flow bottle valve, good for applications up to 300 HP and has an anodized black finish that not only is show quality, but is resistant to chipping and scratches.