No need to drill holes in wall, just cleaning the installing surface(must be smooth surface, like ceramic tile metal surface ,glasses, etc. )and dry it.Just peel off the adhesive strip in the paper holder back and stick it on the wall, it takes a few seconds to press.Adhesive toilet paper holder is not suitable for limestone wall, wall paper or painted wall . If it is a new ceramic tile, wipe it clean with alcohol.Recommended to leave it 24 hours before hanging any objects.How To Uninstall It When Not Needed : The self adhesive toilet roll holder need to use the hair dryer to heat the adhesive and then use the blade to scratch it step by step.Colour:SilverMaterial:stainless steelSize:Long section 26.8 x 7.8 x 4.8cmPackage Contents:1 * napkin holderOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.