Chameleon Color Tones Markers-Chameleon Color Tone Marker Pens can be purchased individually. Build your collection of colors as you like starting with a few basics then growing your collection up to the full range. This package contains one 8- 1/2x3/4x3/4 inch color tone marker with instructions. All twenty colors are available as well as the Colorless Blender Pen and the versatile Detail Pen. Store in a cool, dry place. Do not leave in direct sunlight.