Gas Cylinder Racks are suitable for both outdoor and indoor use, and can be used to keep gas, oxygen, nitrogen, helium, hydrogen, acetylene, and other various cylinders and tanks in safe storage. Specification: Material: 304 Stainless Steel. Capacity: 1/2 x 40 L Cylinder. Inlet Diameter: 27 cm/10.6 in. Fixing Hole Diameter: 10 mm. Length: 35 cm/13.8 in, 65 cm/25.6 in. Width: 30 cm/11.8 in. Height: 100 cm/39.4 in. Use: Keep gas, oxygen, nitrogen, acetylene & other gas cylinders. Features: 1. Can store any 40 L gas cylinder. 2. Keeps cylinders organized and saves space. 3. Made of tough 304 stainless steel for long-lasting durability and safety. 4. Keeps cylinders securely upright for easy storage and transportation. Package Includes: 1 x Gas Cylinder Fixed Rack. Note: Cylinders are not included. Tips: Manual measurement, there will be 1-3 cm error. Due to light and personal differences in color understanding, there will be NRQUll color difference.