This product is as good as others’ glass wall shelf has only 1 screw on each side that attaches the shelf to the wall, causing the top of the bracket to pull away from the wall. We upgraded with 2 screws on each side and keep it looking. Not only strong but also rustproof. We upgraded the glass of the bathroom shelves. Replaced the regular clear glass with light black tempered glass, which is stronger, resistant to high temperatures, not easy to damage, and convenient in cleaning. The Volpone bathroom floating shelf can be installed by an adhesive method or drilling method. Adhesive install: no drill no damage to the tile wall. Drill install: a suit for drywall. All tools and instructions will be included.