Gamma-150 with Reflector Holder ArmGamma 150 Reflector The Cheetah Gamma 150 is a 100cm x 150cm (40" x 60") rectangular handheld reflector that provides the benefits of 5 different reflector styles in one easy to use package. The rectangular shape makes this reflector easy to hold and can be used in "landscape" or "portrait" orientation, depending on need. The built in handles allow for comfortable one or two handed use. Built into the handles is a standard 1 4" 20 threaded hole for