Koh-i-Noor Water Colour Set contains 24 assorted gouache colours divided into 4 circular palettes which can be nested. These sets are ideal for kindergarten and school use. The luminous Koh-i-Noor Water Colours have a high opacity and are nice to mix. They are suitable for all wet techniques and applications in school and leisure. Each well in this Koh-i-Noor Water Colour Set is 22.5mm in diameter.