Abstract: A foldable rod assembly includes first and second rods of predetermined dimensions and having connecting ends with pivot holes, and a coupler unit for coupling pivotally the connecting ends. The coupler unit includes two elongate plates respectively having right and left longitudinal sides, upper and lower transverse sides, and upper and lower pivot holes disposed in symmetry to a middle line between the transverse sides. A blocking member extends transversely from the right longitudinal side proximate to the upper transverse side. Two protrusions extend from the left longitudinal side parallel to the blocking members respectively and proximate to the transverse sides.