This is a Black Walnut Burl slimline Twist Pen. It's made with Satin Nickel accents. The pen uses a Cross® style refill that features a premium Swiss-made carbide writing tip for smooth consistent writing. To replace the refill, pull off top of pen above the center band and twist out the refill. A highly polished lacquer finish was used to protect the wood. These hand made pens and pencils make wonderful gifts and are absolute treasures to own!