Now at a discount, buy the American Crafts Sketch Markers Value Pack (36 pack) at CraftDirect.com. This Sketch Markers Value Pack includes 36 dual-tip alcohol markers that will allow you to add shadows and gradient effects to your projects. The markers have dual tips, a chisel, and a fine point and come in coordinating shades. To blend, you start with the lightest color and then layer on the darker shades. You are going to love these shades whether you use them separately or blended.