Abstract: A clip consisting of a single strip of a strong metal such as steel having two legs at right angles and joined by a U-bend, one leg of the clip being a coplanar extension of one arm of the U-bend and the other leg of the clip extending away from the U-bend in a plane perpendicular to that of the other arm. Each clip leg has one or more openings. The clip is marketed in this shape. To use the clip, the clip leg that is coplanar with an arm of the U-bend is bent at the junction between said coplanar leg and arm to bring the two clip legs into juxtaposition, at which time the openings in the two legs are registered with each other, whereupon the clip is ready for installation. To enable the aforesaid clip leg to be bent precisely, a locating structure, e.g. a brace, is disposed at the junction between the coplanar leg and arm.