Bottle (cylinder) of C25 (75% Argon, 25% CO2) Shielding Gas (Usually used for MIG welding mild steel) Full bottle. Filled but never used. Once the cylinder is empty, it will need a hydro test before the next fill. Last hydro tested in late 2013 (December) at Crest Fire Extinguisher in Victoria. The cylinder to the neck is 26 inches tall. Valve is for a CGA 580 fitting (standard welding gas fitting). $110