Sturdy and DurableThe shower handles is made of plastic, 2 suction cups with strong power, very sturdy and durable. You won't slip even when wet, providing comfortable experience in bathroom, bathtub, shower and toilet handrail.Tiles should be 5x 5 or larger. Tool-Free Installation: Please Clean and dry both surfaces of suction cups and wall, hold the shower handle and press suction cups firmly into place, then push them to the wall as near as possible, then lock down both levers completely to secure. Powerful Support: Grab bars for bathtubs and showers is perfect for use in the bathroom, Providing you extra stability when entering or leaving the bathtub or shower for a safe and comfortable experience. Perfect for seniors & disabled & kid & pregnant woman. Warm Tips :Please don't put all the body weight on the armrest. For the safety of seniors, elderly, injured, or handicap, please note that the suction cups are only stick on smooth, non-porous airtight surfaces like metal, glass, tile, stainless steel and acrylic If adhesion seems to be insufficient, loosen the suction assist lever and reconnect but not apply to uneven tiles, textured plate, unfinished marble, wallpaper, painted wall, etc. Quality After-sale ServiceOnce you have any questions, you can always , we will solve your problem as soon as possible within 24 hours.