20# CO2 Alum tank (FULL) & 2 Gauge Regulator. Has CO2 in it. Stamp date on tank - 03 The 20# alum tank is DOT stamped . The regulator is a 2 gauge ( 1 for tank pressure 0-3000psi, 1 for adjustable output pressure 0-200psi. Made by Chudnow mgf Oceanside NY. JO series $85 OBO