1 clip every 30cm of lights 20 x clips 24 x strips Damage free No sticky residue Suitable for most smooth surfaces including painted walls, tiles, metal and wood These decorating clips and strips are designed to hold decorative lighting where you can use one hook per 30cm of light string. They are super easy to apply, without the need for nails, screws or drills. When you decide to remove them from the wall, the strips off damage-free, leaving no holes, marks or sticky residue, making them suitable for most smooth surfaces such as painted walls, tiles, metal and wood.