Easy to apply, no need for nails, screws or drills Strips stretch off cleanly without leaving holes, marks or sticky residue Keep frames flat and secure to the wall, discreet strips are hidden behind the picture frame Strips lock and relock so frame can be removed and repositioned Suitable for most smooth surfaces including painted walls, tiles, metal and wood Holding Power: 4 sets of strips contained in this pack can hold one frame weighing up to 5.4 kg, and measuring up to 45cm by 60cm Pack contents: 4 sets of narrow strips Indoor use See usage instructions: After attaching to wall wait 1 hour before hanging anything on the hook/strip. Ideal for solid, hollow and painted walls. Do not use on wallpapers, vinyl surfaces or other delicate or weak surfaces. Do not use on windows