Artwin double-ended marker is designed to meet all artists' needs with a medium point at one end and a fine point at the other. Contains acid-free, nontoxic ink. Ideal for rubber-stamping, landscape studies, gesture drawings, watercolor painting, sketching, cartooning and portraits. Canister set interlocks with other Artwin canister sets so you can create your own interlocking palate of colors. Assorted colors include black, red, blue, green, yellow, brown, orange, violet, pink, light blue, light green and gray.