Cradles have been around for a long time and provide a lot of products in a small space. Configurations can be 6, 12, 16 & 18 cylinders. The gases put into these packages can be: Oxygen, Argon, Hydrogen, Methane, Helium, Breathing Air, Argon/CO2 mixes, Nitrogen, & CO2. Unlike liquid DOT4L cans, you don’t have to worry about the gases building up pressure and releasing out the safety when not in use. This makes these cradles useful in warmer weather and sitting for long periods of time. Another advantage is the flow rates. With cylinders being filled to high pressures ranging from 3000 psi to 4500 psi your flow rates are high with correct sized regulator and downstream hose sizes. You can even pull off both supply valves on manifold to get multiple users off each unit. Ratermann Manufacturing supplies these in many shapes and sizes.