This heavy duty Strom Plumbing solid brass book holder attaches to the top of tub shelves GB0946 and GB0494, sold separately. The holder is available in lacquered brass or chrome plated brass adn is sure to make reading in your bath tub more enjoyable. PLEASE NOTE: This item is the BOOK HOLDER ONLY. You must already have or purchase separately either of the two tub shelves listed above.