This package includes 3 dual tip alcohol markers which will let you add shadows and gradient effects to your crafting projects. These markers are part of the American Crafts Sketch Markers Collection. They contain dual tips, a chisel and a fine point. This set of markers comes in 3 shades of Slate. To blend, you start with the lightest color and then layer on the darker shades. You can then blend with a colorless blender marker (sold separately) for a seamless effect. You are going to love these shades whether you use them separately or blended. These markers are made in the USA.