WARNING CA Proposition 65: Yes. Tough And Attractive Powder coated Finish. NX nitrous bottles feature a tough and attractive powdercoated finish. Includes a high flow bottle valve. Wow, how do I start to tell the world why NX is different and better than any other company?NX copies no one; we lead the industry in technology and innovation; Never be satisfied with the status quo; Always give the customer more than he expects!