Use wood posts with or without vinyl sleeves. Wood posts, vinyl sleeves, and post caps can be purchased at most lumber/building supply stores. We have vinyl sleeves and  post caps available for shipment. You can design your railing around our stock tube lengths. If you have special size requirements, please contact us. We can cut tubing to any lenthth.  Use our end fittings secure your top and bottom rail to the posts. This will make for a first class, well designed cable rail system.