Seven tea bowls that Rikyu particularly liked and gave names to. These were the black tea bowl Oguro, Hachihiraki, Toyobo, the red tea bowl Hayafune, Kimamori, Kengyo and Rinzai. They are also called 'Chojiro shichi-shu', because they were made by Raku Chojiro, but there are different opinions about this.