Bathroom Grab Rails will give you steady confidence in a slippery area. Strong suction cup design works on any non-porous, flat surface, including smooth tiles, glass, porcelain or fiberglass. Please note not adhere to rough or uneven surfaces Portable support safety grip grab handle with suction cup fitting and rapid release Useful bath, shower and toilet disability and mobility aid, no tools or drilling required. The grab bar will not harm surfaces when installing and used properly Textured, contoured rubber provides a comfortable non-slip grip, won't slip even when wet providing safety and security in the bathroom, tub, shower and toilet handrail, perfect for the injured, elderly and toddlers The suction balance assist bar is for balance assistance only and not for body weight leverage. The bar should be checked before each use to make sure it is securely attached. If necessary, it should be reattached PLEASE READ THIS BEFORE YOU BUY - For getting sufficient suction power to work, 1) This Suction Grab Bar only works on tile size LARGER THAN 4"x4", 2) The suction discs can not be mounted on grout seam(s). 3) Make sure there's no texture on the shower wall, 4) The mounting surface must be flat and smooth for any other applications