This is the only permanent ink pen available with a black marker on one end and your choice of five vibrant colors on the other, purple, green, pink, blue & red. The water and fade resistant permanent ink makes this Doubleheader perfect for Arts and Crafts as well as for applications around the home and office. Both the black and color inks let you write on virtually any surface - plastic, glass, fabric, metal and wood. Use it for marking packages, labeling jars and containers, signing photographs and organizing CD-Roms. And it's quick drying, so you won't have to worry about smears.