The Econo-Cyl Liquid Cylinder offers a thick stainless steel outer jacket, an all-metal shock absorbing footring, color-coded valve handles, and color-coded safeties. Built with our legendary Composite Super Insulation and Chart Vacuum Technology, the Econo-Cyl series provides maximum gas utilization for your customers. The most popular models have been streamlined, making them the preferred choice in economical transportable liquid cylinders. Product Highlights: Ideal for liquid nitrogen, oxygen, argon, CO2 or nitrous oxideAll stainless steel inner and outer cylinder constructionThick, dent-resistant outer shellFour handling ring supports with large one-inch pipe size ringFour-inch galvanized casters on 230 modelsIntegrated pull handle on 230 square base modelColor-coded valve handles and name tags for easy identification of the plumbing functionsRoto-Tel Liquid Level Gauge SystemFive-year vacuum warranty