Taylor Made Sur-Moor Shackle Buoy 18" DiameterThe rope nest design has a built in cup shape at the top of the buoy that allows the anchor shackle to nest below the buoy surface. This recessed area helps shield the shackle from contacting the boat hull while making a convenient nesting place for the pennant line when the boat departs from the mooring. The hard-skin polyethylene shell is UV protected to resist the weathering effects of sunlight and is foam filled to positively displace water. Tube-Through-The-Center design with blue reflective striping. Mooring clevis not included.Features: Hard skin shell has a sandblasted finish which allows the buoy to be easily painted for identifying.; Shackle & hardware not included.; Specifications: Tube Diameter: 2-1/2"; Buoy Diameter: 18"; Approx. Buoyancy: 100lbs;