supon dual head grip swivel clamp head holder bracket compatible for photography studio flash reflector boom supon features: <br /> connect a boom arm to a stand. <br /> the clamp is adjustable to fit many boom diameters. <br /> enable to adjust the height, angle, and other positioning. <br /> easy to setup, use and adjust. <br /> a great addition to multiple uses in your studio. <br /> specifications: <br /> material: plastic <br /> color: black <br /> diameter (without hand grip): 77 mm <br /> height (without hand grip): 82 mm <br /> <br /> includes : <br /> 1x dual swiveling grip head clamp