iBOLT xProDock holder Compatible with Samsung Galaxy, HTC, Nexus, LG, Sony, and More Works with all standard 17mm mount including Garmen and iBOLT Mounts (ROK 2, Rok 3 suction mount, miniBall mount or Vent Mount). The xProDock Holder cannot be mounted by itself. The xProDock fits cases and batteries that range from 2.59 In (66mm) to 3.7 In (94mm) in width, and unlimited height. Includes one iBOLT tightening ring