Includes 275-gallon Roth UL SU 2258 double-wall tank, inner wall molded polyethylene, outer wall galvanized steel, reel-mount bracket, tank base, 1/2" aluminum diaphragm pump, 1/2" x 50' reel package, air coupler, air connector, air filter/regulator with gauge, 5' air connecting hose, 2' oil connecting hose, vented fill cap, float and string type sight gauge, and leak detector.