Dimension: Side length (radius): 21cm Height: 4.5cm Features: Easy installation - can be installed on any smooth and uneven surface, tile, marble, glass, frosted glass, Metal, solid wood walls, etc. Installation method without drilling: Glue 1.Clean and dry the wall. 2. Applicate the glue on the back of the shelf. (at least 6 points per side) 3.Press for several minutes (make sure the glue is expanded). Use the disposable auxiliary sticker to hold the shelf. 4. Wait 72 hours before using and discollar the auxiliary sticker. How to remove: if the glue has not been solidified, it can Be cleaned with water cloudy and removed by scraping or sanding after drying. 1. Use a hammer and a flat screwdriver to bang on the glue. 2.Use a screwdriver to gently open the contact surface with the shelf. 3. Use a knife to cut traces of remaining glue. 4.Use a damp cloth to clean the wall. Note: < P> Make sure the wall is dry, smooth, clean and without big bump. Please do not install this product in