Abstract: A link with a first segment (3) of nearly constant width whereon near its free end (4) it has a transverse oblong slot (5), originating a bracket-shaped bridge (6), at the other end said segment (3) narrows and joins the second segment (8), which also has nearly constant width, smaller than the length of the slot (5) in the first segment (3), with said second segment (8) bent, towards its origin, in a position parallel to the first segment; said segments (3) and (8) having a length such as to leave between their approached free ends a space (13) that is a little greater than the thickness of the strip with which the link is manufactured.