The KYDZSuite™ Hub is central to creating your own space, you can attach items at eight different 45°angle increments. Match to other KYDZSuite™ items including Panels, Stabilizer Wings and more. Bottom has slip-resistant rubber stopper. Wooden dowel is made using hard Maple with KYDZTuff® finish. Top and bottom connector hubs are made from molded nylon for superior strength. Wooden top cap screws on with friction fit rubber gasket to tightly secure the hub in place. You will need 3 Hubs for the first 2 panels, and 1 Hub for each additional panel. 2-1/2" wide x 2-1/2" deep.