Richeson Semi-Moist Tempera Cakes feature vibrant, bright colors that mix beautifully. The cakes easily wet with water. Not as messy or wasteful as liquid tempera paint, Tempera Cakes are great for classrooms and group art projects. Paint is AP certified non-toxic. Available individually or in sets. - Empty 8 Color Tray w/Lid, Pkg of 6Semi Moist Trays, EMPTY 8 CLR W/LID - Create your own Semi-Moist Tempera Cake set by filling an empty palette with colors of your choosing (sold separately). Each pack includes six empty, larger-size butcher trays with spots for 1-5/8" × 1-7/8" × 1/2" cakes. Your choice of 8-Color or 12-Color trays.