Bluehorn 72-Color Tin Case 1Use Bluehorn Water Soluble Sketching Pencils wet or dry. Shade them on dry paper and apply a water wash to get a watercolor look, or use dampened paper for softened edges of line. Or use them dry like regular sketching pencils. Pencils are pre-sharpened. 2High quality drawing pencils for writing, drawing and sketching.Beautifully crafted with recycled wood, which is environmentally friendly and non- toxic. 3Deluxe Tin Case - Well protected pencils from breaking during transportation.