Abstract: A new reinforced gutter-hanger supporting bar designed to be incorporated with the conventional spike and tube gutter hanger and installed on any eaves-hung metal gutter. The supporting bar creates the novel LOCK-IN preferred embodiment of the invention, which LOCKS-IN the spike. This greatly improves the performance of the spike and tube hanger by permanently correcting the serious fault of these hangers--loosened and often lost spikes--as no other device known to the art does. No changes are made in the existing spike and tube hangers.This new supporting bar is an inexpensive stamping, preferably fabricated from heavy sheet metal. Basically a one-piece metal strip it is shaped into three contiguous, yet different appearing sections.First, a short flat end section of an embodiment of the invention which comprises two transverse, appropriately spaced deep score marks and two 3.degree. bends, coinciding with an superimposed upon the score marks.