Real paint in solid form. They are not crayons, oil pastels or soft pastels, but highly refined drying oils blended with durable pigments and then solidified into stick form. Artist's Paintstik® Oil Colors perform beautifully with all conventional oil paints. All of the same techniques that you are accustomed to using in oil painting and more can be successfully performed using Artist's Paintstik® Oil Colors. Each stick is 4.5" x 5/8"