Like magic, these pencils change colors at your touch! Wooden pencils are finished with a temperature-sensitive coating, so the heat in your hand actually alters the color. 7 1/2" long. Choose any name or message, and we'll print it on these quality pencils FREE. A great idea to add a personal touch to family reunions, fundraisers, parties, or gifts. Assorted colors, we'll choose for you. Specify name or message; limit1 line, 30 letters/spaces. 1 name per set.