Set consists of 4 x warm colour palette blocks, 4 x cool colour palette blocks and 4 x fluoro colour palette blocks. These long-lasting poster colour paint blocks are both easy to use and easy to store making them an ideal option for the classroom. All that is required is water and you are set to go. Colours are intermixable. Spare blocks are available to purchase separately and come in packs of six blocks per colour (18 different colour packs). Each individual block measures 4.5cm diameter and 1.5cm thick.