The RAM-HOL-TAB16-CUPSU includes (2 qty) Tab-Tite™ cup ends and hardware. The interchangeable support cups can be used, along with all RAM Tab-Tite™ and Tab-Lock™ mounts; these include the universal backplate that support all TAB cups. Hardware is included to attach the cup ends to the backplate.Cup End Dimensions:Height: 7.5" to 9.875" Width: 3.625" to 5.05" Depth: 0.13" to 0.82"