Support accessory for use with telephoto lens It supports holding heavy telephoto lens by placing the lens body over the "Seagal" mounted on the tripod. Since the lens is not fixed, you can instantly fine-tune the composition. Use the tripod hole (1/4") on the bottom of the Seagulle to secure it to your tripod or monopod. Made of aluminum, lightweight and durable. The contact surface of the lens has rubber to prevent the lens from sliding or scratching. Compatible with a wide range of lens diameters. (Diameter 1.6 - 7.1 inches (40 - 180 mm)): You can also use the optional product to attach the Seagal to the hot shoe of another camera to support a second camera.