Command Picture Hanging Strips make decorating quick and easy. One click tells you they?re locked in and holding tight. Best of all, when you are ready to take down or move your pictures, the picture hooks come off leaving no wall damage, cracked plaster or sticky residue. They come in three sizes; small strips hold most 20 cm x 25 cm frames, medium strips hold most 45 cm x 60 cm frames and large strips hold most 60 cm x 90 cm frames. Also available are Command Frame Stabiliser Strips, which keep picture frames level even when they're hung on nails.