NOS now offers 5, 15, and 20 lb. nitrous bottles in Black with a distinctive black carbon and chrome bottle decal. Not only are we offering these bottles in gloss black, but we have reintroduced the original SUPER HI-FLO nitrous valve. Along with the Super Hi-Flo valve is a "screw-in" 3/8" I.D. siphon tube, and new black faced nitrous pressure gauge.