The UFO is a universal, single piece fastener designed to quickly and securely attach solar modules to XR Rails. It comes preassembled and lubricated for faster installation, featuring a sleek, low profile design. By adding a Stopper Sleeve, the UFO easily converts into an end clamp. As part of the IronRidge Integrated Grounding System, listed to UL 2703, it eliminates the need for separate grounding hardware.