Faber cylinders made in Italy are the standard for dive tanks.
Steel cylinders are the ultimate. Steel's superior strength allows significantly thinner wall thickness than aluminium tanks meaning a smaller and lighter overall package for the same internal volume.
All cylinders get more buoyant as they empty, however there is a difference between steel and aluminium. Aluminium cylidners will become positively buoyant when low on air, whereas Faber steel cylinders are still slightly negatively buoyant when low on air. This means you don't have to wear extra weights to counteract that buoyancy at the end of the dive... and a lighter weightbelt is definitely a good thing!
This package includes a 15l cylinder, boot and Sherwood Pro Valve. The Pro Valve easily switches from yoke to DIN simply by removing a threaded insert.