The tea strainer fits my cup size 3, my cups with handle and fits in some teapots.
Sold as sets:
Tea strainer in unglazed porcelain, white: W 5.5 cm x H 4.5 cm
Bamboo stick with silicone ring: L 16 cm
Tray in glazed stoneware. light blue: Tray: 7×7 cm