29 conversely the other stabilizing strip 25 b one end being rotationally fastened at the center area of the lip section 24 of plate 22 b by a connecting pin 30 and the other end being fastened at the outer edge of the lip section 24 of plate 22 a by means of a lug nut 23 which is allowed to slide freely within the aperture 29 thus as the plates 22 a and 22 b are opened or closed the stabilizing strips 25 a and 25 b each rotate at one end about one of the corresponding connecting pins 30 while the other ends slide within the corresponding apertures 29 a and 29 b this prevents any u201c buckling u201d action between the plates 22 a and 22 b both the connecting pins 30 and the lug nuts 23 have a nut and bolt type of structure the bottom sections are juxtaposed against the surface of one of the strips 25 a or 25 b and resemble the head of a bolt while the upper sections have a nut type structure with an outer diameter larger than either of their respective cam flange slots 26 a or 26 b or the apertures 29 thereby as they protrude through and are urged in a transverse motion they are able to maintain the connections therein gripping plates 22 a and 22 b stabilizing strips 25 a and 25 b and cam flange section 13 are designed to be manufactured from a lightweight metal or plastic a very useful idea that can be employed when using the present invention.