Faber cylinders in 10L, 12L and 15L at 232 bar and a 10L at 300 bar, plus small aluminium cylinders of 0.85L and 2L from Polaris and Tecline. A 300 bar cylinder needs a 300 bar DIN valve and regulator to take a full fill, so check your first stage before choosing one. Valves are under scuba valves.
