At Handy Hired Ltd, we stock a range of shielding gases and argon, by Hobbyweld. We also supply oxygen, acetylene, balloon gas and liquid carbon dioxide. Refillable cylinders are available in two sizes. Original [A 9 litre cylinder pressurised to 137bar (2000psi)] and Ultra [20 litre, pressurised to 300 bar (4350psi)]. Being a dissolved gas, acetylene cylinders are slightly different capacity. All ultra cylinders have built in gauges, for flow and pressure.