Faber steel cylinders are made in Italy, and are the most popular steel dive tanks in the world!
Steel cylinders offer advantages over aluminium.
Steel tanks have less of a buoyancy shift, meaning that they start and finish the dive negatively buoyant allowing you to wear less lead than the comparable aluminium cylinder.
Also they are lighter than the same sized aluminium cylinder (a common mistake is thinking steel is heavier) because they use thinner metal as it's stronger.
This 12L steel cylinder has a fill pressure of 232 bar, and comes complete with a 'convertible' valve so that you can use DIN or Yoke fitting regulators and also includes tank boot.