These picture hanging strips make decorating quick and easy. One click tells you when these strips are locked in and hold tight. Best of all, when you are ready to take down or move your pictures, they come off leaving no wall damage, cracked plaster or sticky residue. They work on a variety of surfaces including paint, wood, tile and more. X-Large Strips—Holds maximum frame size of 24 in x 36 in. Holds: Up to 20 lbs per 4 Pairs; Permanent/Removable/Repositionable: Removable; Mounting Application: Command™ Adhesive; Hanger/Hook Type: Picture Hanging Strip.