Aurora Aluminium Shower Curtain Rod with Adjustable Spring, 55 to 102-inch (Ivory) This shower rod is made of Aluminium having a diameter of 25mm made of .5mm thickness which is rust proof, powder coated ivory colour, Spring Tension Rod Adjustable to fit most shower stall sizes, Quick, easy installation; Simply extend and twist No tools, No drilling, No damage to walls done while installing,it sticks to wall creating a vacuum 'very impressive and pretty looking unit used mostly in bathroom and other curtain applications where it is not required to drill. the same can be extended to various sizes from 55" to maximum of 102" i.e almost 8.5' (feet)