OnlineEEI, Adjustable Support Rod for use with Pipe and Drape System, Expandable from 7-12ft Wide Adjustable - Drape support rod (crossbar) for pipe and drape systems can be adjusted anywhere between 7 and 12 feet Lock Function - Button stops rod adjustment at 7, 10 and 12 feet 2 Inch Diameter - Crossbar has an OD of 2 Inches, we recommend rod pockets be sewn at 4 inch diameter Aluminum - 2 piece telescopic anodized aluminum tubing Hooks - Drapery crossbar has hooks on each end to attach to uprights