These pentagon shaped colored pencils are all color and no wood. they last four times longer than conventional colored pencils and can produce broad and fine lines. The set of 12 includes colors red, red-orange, orange, yellow, yellow-green, green, sky blue, blue, violet, brown, black, and white. The set of 24 includes these colors plus gray, magenta, pink, light blue, aqua green, jade-green, peach, golden-yellow, yellow-orange, mahogany, tan, light brown. They are packaged in a clear reusable tray.