Polyform U.S. G-6 Twin Eye Fender 11in x 30in - Black w/Adapter. Subscribing to the philosophy that quality does not have to cost more they include ribs for extra strength inflation valves for larger sizes and reinforced rope holds for long-term durability.The G Series fender is designed to provide protection and stand-off for vessels between 10 to 40 feet in length. Package Contents: Polyform U.S. G-6 Twin Eye Fender 11 x 30 Polyform U.S. G-6-BLACK: G-6 Twin Eye Fender 11in x 30in - Black w/Adapter