TRACELESS ADHESIVE - The adhesive Sticker ensure strong adhesion to smooth wall. No drilling or screwing needed. MATERIAL - Constructed with Stainless Steel that ensures beauty, cleanness and rust-resistance. DAMAGE FREE - The transparent adhesive spares the walls of your bathroom from drilling and damage. EASY INSTALLATION - Tool-free, installation takes you less than 2 minutes. Before installing the product, please make sure that the surface of your wall is clean and dry. Installation Step: Clean and dry the wall, making sure there is no dust, stain or wax on the surface. Put the stickers on the shelf. Remove the protective film of the stickers. Press the stickers and the shelf on the position where you want the shelf to be installed on. Take off the shelf, press the stickers on your wall and make sure all the air between the stickers and the wall is squeezed out. Put the shelf on the stickers. Notes: The stickers do not work on bumpy, rough surfaces. Before installing the product, please make sure that the surface of your wall is clean and dry. Please make sure all the air between the stickers and the wall is squeezed out. The left air between the stickers and the wall will reduct the holding capacity of the product. Specifications: Size:140mm*85mm*25mm / 5.5in*3.3in*1in Weight: 91g Material: 304 Stainless Steel