The From the Anvil Celtic Single Robe Hook Black is a neat and small single hook and is ideal for bathrooms. The fixing plate size is 41mm x 24mm and it projects 42mm - sold individually, it completes complete with fixings. Black Hook The hook has a black finish - this is baked in a high-temperature oven to give it good durability and can be used internally or externally. To remove dirt deposits, simply wipe over with a lightly oiled cloth from time-to-time and this will restore it to its original condition.