This pen features a dyed and stabilized buck-eye burl. The stabilization process injects the wood with colored epoxy by using a vacuum chamber and heat curing system. This process hardens the wood making it a product that can be hand turned. The wood is then hand turned and mounted on a gun metal PKM-4 kit that takes cross style ball point refills. Pictures do not do this pen justice. It is an amazing one of a kind piece!