Bathroom Accessories
Shower Rails - Triton Lucas Curved Shower Riser Rail
Curved rail design Distance between rail brackets: 480mm/18.9 inches Rail length: 530mm/20.87 inches Includes shower head holder (twist & lock height adjustment mechanism)
https://www.bizrate.co.uk/bathroomaccessories/shower-rails-triton-lucas-curved-oid28316458576.html