Fits standard shower bars Ø16 -Ø28mm, minimum wall distance 5mm Easy to install and remove, no tools required, easy to clean. Load Capacity: Approx. 4.4 lbs (2 kg) (8 bottles of 8.5 fl oz (250 ml) bottles). The bottom allows water to drain so the bottle can be dried. - Made of durable corrosion resistant material