Polyform CM3R Red Mooring Buoy 22'Polyform CM3R Red Mooring Buoy 22' The CM Series Mooring Buoy is designed for maximum strength, durability, and boat protection, providing added security for any mooring. It features two versions of mooring iron: galvanized steel with a protective vinyl coated eye, or stainless steel. Each buoy includes a 1 2 inch central rod, a large reinforced 4 3 8" eye, and a 1 1 2" swivel. The CM Series is a long trusted standard and is preferred by boaters