The Falcon Eyes B-8510 Background System is quick and simple to assemble, making it ideal for use on location or in your studio. This system can be used in conjunction with both, paper and cloth backdrops. The stands are equipped with standard couplings so that they can be used for lamps and studio flash units. The crossbar consists of 4 sections, which can be attached to each other with allen bolts, allowing you to determine the width of the background. The stands are provided with a spigot with 3/8” male screw thread.