Art Grip Color Pencils:Green (Design Memory Craft ) Art GRIP Color Pencils are richly pigmented oil based color pencils with a buttery smooth laydown for blending Oil-based technology allows for ease in blending and wax won't come to the surface over time. The triangular shape allows for tireless coloring, shading, writing, coloring stamps, and drawing Vibrant, fade-proof, permanent pigment colors The thick 3.3 mm leads of vibrant fade-proof pigment are break-resistant, and will allow you to use all of the color in your pencil barrel