Nitrous Express 10124 SHO (Super High Output) Hose with 2 ft. D-4 Hose with -3 AN Hose End and -4 AN Hose End Made of the finest quality braided stainless steel Hose comes with teflon lining Assembled with anodized fittings Has a -3 AN Hose End and -4 AN Hose End