This is the XS Scuba Steel 80 Diving Tank Cylinder w/Pro Indicator Valve Features: Built in Italy by Faber Cylinders with 40 years of experience DOT Special Permit #13488 and Transport Canada #SU7694-237 approved Oxygen cleaned for use with up to 40% pre-blended Nitrox Exclusive Phosphatized-cleaned internal surface Triple-protected zinc spray plus epoxy and polyurethanepainted finish for long lasting durability. Manufactured using the deep draw process with Chromium Molybdenum steel Includes XS Scuba PRO valve with PVD finish and safety handwheel High quality, injection-molded custom tank boot with round rim 3442 psi working pressure Cylinders come equipped with a Pro valve that easily converts back and forth depending on the type of first stage regulator to be used in conjunction with the cylinder increasing the versatility of the tank. The construction allows the diver to remove lead weight from their weight belt or integrated weight system of the BCD, allowing the diver to better distribute weight by moving it to the rear of the BCD a great advantage when wearing a back-inflation style (Wing) BCD.