The RM2X804P double windshield suction mount is part of Arkon's Robust Mount Series. This mount includes a 4-Prong pattern-compatible Robust Mount shaft with two 80mm windshield suction bases. This heavy-duty mount is ideal for truck or car windshields. The suction bases lock into place on the windshield with one-touch levers. The 80mm windshield suction bases work well in all climates. The Robust Mount shaft provides double ball adjustment points for positioning of the mount and your 4-Prong pattern-compatible holder, cradle, adapter, or device.