The RAM-HOL-TAB26-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: 9.38" to 12.11" Width: 5.55" to 7" Depth: 0.13" to 0.34"