I have in the garden are an ancient greenhouse, where I already had to replace all the screws in order to build it can. Since no glass brackets were there and I have neither the garden center yet at the hardware store which could get, I have resorted to the me there recommended mounting adhesive for greenhouses which me last year: unfortunately held the not very good. By coincidence I then encountered here on amazon on this glass clamps and am thrilled. Hold both the remaining old discs and the new thinner spare disks quite wonderful. Only when the storm finally one or two discs, however, are kicked out because it went to the neighbors similar.