Fangrui Product Details Robust Construction: Crafted From High-quality Abs Material, This Nitrogen Tank Holder Boasts Enhanced Durability. It Features Wider And Longer Nylon Straps, Making It Versatile For Securing Compressed Gas Tanks Ranging From 4inch To 16inch In Diameter (4l-8l). Adjustable Convenience: Equipped With An Adjustable Metal Buckle, This Cylinder Tank Bracket Allows You To Tailor The Strap Length To Your Specific Needs, Ensuring A Tight And Secure Fit For Your Hydrogen-oxygen Tanks, Preventing Any Movement Or Falls. Versatile Use: Ideal For A Variety Of Settings Including Hospitals, Laboratories, And Factories, This Hydrogen Oxygen Cylinder Bracket Is Also For Mobile Applications Such As On-the-go Otg And Rv Water Softener Systems, Enhancing Its Utility. Please Note:the Physical Slightly Color Difference Or Difference, Does Not Affect The Use, Please Do Not Mind, Thank You! Colour:b:light Gray Material:plastic Package Contents: 2 * Propane Tank Mount 4 * Mounting Screws Only The Above Package Content