Simply slip this double-sided hook over your shower screen/door to hang your towel and robe on the outside and your body scrubber or loofah on the inside. Extending from 2cm to 4cm (" to 1"), it can be adjusted to fit the width of most shower enclosures. Needs no tools to fit simply pop over the enclosure and the cushioned pads will secure it in place. mysmartbuy White Double-Sided Shower Hook for Towel, Robe, Loofah