This Chrome Suction Grab Rail is easy to install without the need for tools and has coloured indicators so that you know when it is securely attached.With an attractive chrome finish, it is ideal for use as a non-permanent solution while travelling to give additional stability. When placed on a surface and fixed with the two pressure levers, the suction cups create a strong vacuum to keep the grab rail firmly in place. It can be easily released when not needed by lifting the pressure levers. The Chrome Suction Grab Rail can also be used by professionals for assessment purposes and for calculating the positioning of a proposed permanently fixed rail.Please note:This suction grab bar is only to be used as a balance assist, please don\'t use the suction grab bar to support your full body weight.As this is a suction cup based item, it will lose strength over time, so to ensure maximum adhesion please re-attach the suction grab bar before each use.The indicators provided are designed to ensure successful installation. They aren\'t meant to indicate proper adhesion on subsequent uses. Re-attaching the suction grab bar and testing the handle regularly is the only way to ensure that it will adhere properly when used.Some surfaces that appear non-porous may still have microscopic cracks that can cause a slow loss of suction over time. Therefore it is important that the item is tested before each use.If you leave the suction grab bar attached for prolonged periods of time without reattaching it, this item may lose suction. In these cases the super grip may not adhere to the wall as strongly when re-applied. Letting the super grip rest on its side for 3-4 days will allow the PVC suction pad to return to its original form. You should then be able to reattach it with optimum suction again. In any case always check the item for firm suction before each use.