Hanging strips for large or heavy picture frames and artwork. They hold strongly and remove cleanly using 3M stretch-release technology. Strips stretch off without leaving holes, marks or sticky residue. Suitable for most smooth surfaces including painted walls, tiles, metal and wood. 4 sets of strips can hold one frame weighing up to 7.2 kg and measuring up to 60 by 90cm. Do not use on wallpapers, vinyl surfaces, or other delicate or weak surfaces. Not suitable for humid environments.