These colors are among the brightest, most intense offered in the QoR line Includes six colors in 5 ml Tubes - Benzimidazolone Burnt Orange, Transparent Pyrrole Orange, Quinacridone Magenta, Dioxazine Purple, Cobalt Teal, and Green Gold UNIQUE FORMULATION – Each color is formulated with an exclusive synthetic binder called Aquazol to accentuate the luminosity and brilliance of pigments even after drying VIBRANT COLORS – QoR provides the subtlety, transparency and flow of a great watercolor, with colors that have as much vibrancy as the best acrylic or oil paint Made in the USA with globally sourced materials by an employee-owned company with more than 40 years of experience making paint for professional artists