You'll be singing out loud when you're creating with the Opera Artist Grade Watercolor Tube that is part of the Art Philosophy Collection by Prima. This concentrated pigment watercolor is fantastic for creating gradients, shading, and blends smoothly like no other watercolor. You will love the professional results that you get with the highly concentrated pigments that will give your projects longevity. Included in the package is one .5 fluid ounce tube of pink, lightfast watercolor.