Two formulas: transparent and opaque. Colors are poured into large, circular cakes that snap in and out of trays. Sets include a pointed, round red sable brush. - Grumbacher Watercolor Pans - Opaque Pan, Set of 24 colorsGrumbacher Watercolor Pan, OPAQ 24/SET - Includes 24 pans, one in each of the following opaque colors: Light Yellow, Light Orange, Light Red, Deep Crimson, Yellow Ochre, Burnt Sienna, Leaf Green, Sea Green, Prussian Blue, Ultramarine, Umber, Black, Lemon Yellow, Indian Yellow, Violet, Cobalt Blue, Turquoise Blue, French Green, Magenta, Cyan Blue, Olive, Flesh Tone, Gold, and Silver.