No complicated installation tools are required, just lock the latches and our suction shower grab bars will be securely fastened to the surface. Notes on the shower grab bar: The installation surface must be flat and smooth, not on grout joints, and make sure the surface you are installing on is not textured. This shower grab bar will assist and help support a person's body when using the tub or toilet without having to worry about slipping and falling. For your safety, please check the stability of the shower handle regularly. If the shower grab bar is unstable or has sticky dust inside, please remove the grab bar, clean and dry it for the next use.