Premium Mark V. Toughest plastics available today. Rock hard outer shell of a nominal 1/8" thickness. The core is 2 lb. high density polyurethane foam. 2" blue band around buoy.
Mooring chain should be 1/2" smaller in width than the tube I.D.
Chain length is normally 1.5 x water depth
The chain weight should not be greater than 1/2 the buoyancy rating of the buoy
