Coupling member

A device for coupling together two elongated elements extending at an angle to each other, at least one of which has a convex exterior, so that the two elements are held against relative angular displacement with respect to each other, said device comprising a substantially rigid one piece band comprised of a continuous closed loop of essentially uniform wall thickness, said band having two substantially continuously curving rims, each rim defining an opening which forms the boundary of a recess for receiving a corresponding one of the elements to be coupled together, said boundaries of said recesses defined by said openings defining a single space within and laterally bounded by said band, and each rim substantially constituting a curve traced on a convex surface of the corresponding element to be coupled, at least one rim extending more than 180.degree. around the corresponding element to be coupled.