Abstract: Universal clamps, assemblies, devices, apparatus and methods having a holder having a threaded rod extending therefrom with an outer end, a clamp member with a U shaped member extending to one side, a through hole for receiving the outer end of the threaded rod, wherein the U shaped member can be fit about a pipe and the holder can be attached to the pipe by rotating the holder so that the outer end of the threaded rod rests against a slide putting pressure on a side of the pipe. The components can be formed from marine grade UV (ultraviolet) resistant polymer material. The holders can include a single loop and a portable phone support.