Welcome to Defender Canada! 
Taylor Made Post Bumper Item # 997643
Description
Post Bumpers are great protection for pipe supported type docks.
Features:
- Protects the boat from contact with the metal dock pipe and hardware at dock level
- Easily slides over 1 1/2" dock pipe and rests securely against the dock
- Molded from marine grade vinyl with an inflation valve to adjust firmness
- Diameter: 7"
- Length: 17"