The Sierra 3D Illusion 4 Pen Blank is a truly unique and eye-catching choice for your next writing instrument. Featuring walnut with maple, red heart, and osage orange inlays, this pen blank will give the illusion of three dimensions. The stunning combination of colors and wood grains will make your pen stand out from the rest. With the Sierra 3D Illusion 4 Pen Blank, you can create a writing instrument that is sure to be admired.