Balance Aid Tool-less installation: place the suction cup grab bar on the tub or shower wall and flip the latch. Applying pressure to the handle, depress each latch to lock the suction cup grip in place. This portable handle can be easily repositioned and is ideal for travel. Firm and Firm: The suction cup is suitable for non-porous flat surfaces, including tile, glass, acrylic, metal. Grab handles provide stability in the bath or shower. Can be used as a disability aid to prevent elderly, disabled or injured. TIP: Leverage is only used to help and help balance one's body, not to maintain full body weight. The suction cup unit must be applied to a smooth, flat, non-porous surface. Do not cover grout lines, not suitable for drywall, fiberglass or marble tiles. Non-Slip Grip: Textured contoured rubber grip provides security and comfort. Overall rod length is 29.81 cm. The suction cup is 3.75 inches (~9.5 cm) in diameter. Please measure the tiles and the distance between them before purchasing, as the suction cups cannot overlap the grout lines. Buy With Confidence - Our durable, non-toxic materials make this a long-lasting product that assists bathroom safety.