Surebonder CP6-3 6 Piece Wax Pucks Cray-Pen Painting Tool, Multicolor 6 variety colors: neon blue, neon Green, neon yellow, neon orange, neon pink, neon purple Dip the tip of your cray-pen into wax puck and paint Achieve watercolor and oil painting effects by blending and applying thin or thick layers Used with cray-pen painting tool- #cp-1 Additional color wax pucks available-#cp6-1, #cp6-2, #cp2-1,#cp2-3