Due to the fact that the metal rod through the center of traditional mooring buoys can be subject to hidden corrosion, prudence dictates that they should be inspected regularly, and replaced as necessary.
It's always good to have a spare on hand.
• Sized by the diameter of the mooring buoy
• 1/2" diameter hot-dipped galvanized rod with 4" long swivel at the bottom
• Includes 2 galvanized fender washers and a 1/2" nylon core lock nut
• Replacement lower swivel is available separately; see Accessory Products, below