VaporX XRT is a high-performing herb vaporizer that is slender and sleek, shaped like an ordinary fountain pen. The cylindrical shape and light weight make the XRT a great vaporizer pen for the discerning vaporist. Most portable vaporizers are only compatible with herbs, oils or waxes, but the VaporX XRT comes with a special oil compartment included so you’re equipped to vaporize all three types of material. Vapor X Oil / e -liquid cartridges sold separately.