The RAM-HOL-TAB25-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:Length: 9.64" to 12.32"Width: 6.13" to 7.4" Depth: 0.13" to 0.7"