In the past, if you purchased a NOS no bottle nitrous or plumbing kit it was difficult to make sure you got all the other necessary parts for installation. Inevitably no matter how hard you tried some small part was always forgotten, like the bottle nut or bottle nut washer. To make installation hassle free NOS has introduced nitrous bottle kits! NOS bottle kits are available with 10 or 15 pound aluminum bottles, or their lightweight 12.8 pound carbon fiber bottle. All three feature the Hi-Flow valve configuration. Each NOS bottle kit comes complete with a bottle, bottle nut, PTFE bottle nut washer, bottle brackets, and 16 ft. of -6AN feed line.