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High Quality: Our ring base for propane tank is made of strong yet flexible rubber with a solid bottom, which is compression-resistant and suitable for long-term using.
Compatibility: The propane tank base holder is compatible with most wireless propane tank monitors. It fits 20, 30, or 40 Lb DOT-certified propane cylinders (5, 7.5, or 10 gallons).
Proper Size: 8.4 inches outer diameter provides a maximum of 0.9 inch elevation, that provides elevation and protection for the propane tank monitors.
Useful Effect: Provides protection from sharp LP cylinder base and stops tank from sitting directly on the metal tank holder, protecting it from rust and corrosion.
Easy to Use: The propane tank protective ring fits into the channel under the propane tank base and slips on and off easily. It would not slide or break apart during transportation.

RunNico 2 Pack Ring Base for Propane Tank - Propane Tank Base Holder -Protective Spacer Ring for Propane Cylinder Base, Fits 20-40 Lb (5-10 Gallons) Propane Cylinders
Package include: 2 Pc x Protective Spacer Ring for Propane Cylinder Base
Specification:
Outer Diameter: 8.4 inch
Elevation: 0.9 inch
Material: Compression-resistant solid rubber
Color: Black
Features:
Protective ring and spacer for DOT-certified propane/LPG tanks. Suitable for BBQ propane tanks and for mounted tanks on RVs and travel trailers.
Note:
If you are not satisfied for any reason, just return for a refund of your purchase price; we promise 24 hours customer support, please feel free to contact us for any product & order problem.