Enhanced Surface Protection: This 8 1/4inch propane tank base ring safeguards your floors and other surfaces from scratches and rust marks caused by the metal bases of propane cylinders. Ideal for use on patios, decks, and in vehicles, ensuring your surfaces remain pristine. Robust Construction: Crafted from durable, flexible rubber, our propane tank ring withstands compression and resists wear, making it an essential accessory for long-term use. Its solid bottom design enhances stability and prevents any sagging or misalignment. Universal Compatibility: Designed to fit most 20, 30, and 40 lb DOT-certified propane cylinders (5, 7.5, or 10 gallons), this base holder also supports various wireless propane tank monitors, making it a versatile addition to your propane accessories. Easy Installation: Simply slip this protective rubber ring onto the base of your propane tank for a secure fit. It adds a slight elevation to the tank, enhancing stability and compatibility with various surfaces without requiring tools or complex setup procedures. The actual product may have slight color difference or difference, which will not affect the use Colour:Black Material:rubber Package Contents: 2 x propane tank base holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.