The Tudor Collection Coat Hook Smooth Black Iron is ideal for use in cloakrooms and bathrooms. The overall size is 61mm x 51mm and it is sold individually, complete with fixings. Smooth Black Iron Coat Hook The smooth black iron finish does not have deep surface indentations like many other black finishes - this gives it a more modern feel. It is made from malleable cast iron, treated with a zinc phosphating process and then powder coated to provide a durable finish.