This is a collection of fallen trees, that have been reincarnated into desk lamps. I use Almond, Sycamore, and White Birch trees. The arm is adjustable Copper tubing w/ a green patina. Comes with a tweed braided lamp cord and a filament bulb. Each of these guys is one of a kind, and all have their own characteristics. Upon Oordering, in the comments section, let me know your tree species preference (if you have one).