Bought two of these as I didn't want to drill through tiles in the shower (my wife would end me if I cracked a tile by accident) and I couldn't be happier with them. They were quite simple to install, just press them firmly where they need to go and close the lever... Job done! The suction pads can't go over grout lines and you have to ensure the green safety sign is showing. All in all they are well worth the money, they have made all the difference to me knowing I have something secure to hold in the shower.