Polyform U.S. A-5 Buoy 27in Diameter - Grey. This all-purpose product with the signature "blue rope hold" has proven itself in the most adverse conditions.Marking gear used in heavy seas is no easy task. That's why more fishermen use Polyform A-Series than all other buoys combined. You name it ocean sea or river and the A-Series has been there.Put your trust in Polyform's most versatile and well-known product. Package Contents: Polyform U.S. A Series Buoy A-5 Polyform U.S. A-5-GREY: A-5 Buoy 27in Diameter - Grey