The Nitrous Pro-Flow bottle with its patent pending valve and tube assembly flows 360 lb/hr more than the competitor's high flow valve and tube! Independent testing showed a 20hp increase by switching bottles alone. The unique Radiused inlet and large diameter pick-up tube design prevents separation in the flow of the nitrous which can cause a phase change and a resulting loss in flow. The valve assembly is a specially modified version of the industry standard. Nitrous Pro-Flow lightweight aluminum bottles are powder coated black and are available in 10lb and 15lb sizes.