Adhesive, they hold strongly on a variety of surfaces, including painted walls, wood, tile and more|Removes cleanly - no holes, marks, sticky residue or stains|Holds up to 2.2kg|Damage-free hanging|Easy to hang - no tools required!|Holds strongly and removes cleanly|Works on a variety of indoor surfaces, such as painted Gyprock, finished wood, tile, metal and glass|Ideal for Frames no bigger than 60cm x 90cm in size|Use Command picture hangers instead of nails and screws|Great for hanging canvases