Introducing the G Pen Herbal Vaporizer, the first G Pen specifically engineered for use with dry herbs. Expertly crafted, the G Pen Herbal Tank is comprised of a stainless steel outer encasement, a scientifically-hardened glass sleeve, and a heating chamber tank. This unit has the same high-quality standards that are accustomed with all Grenco Science products, so you can be assured your G-Pen will withstand heavy use. The heating chamber included with this unit is much different than most other pen-style vaporizers that are capable of vaporizing dry herbs, as this one is more efficient and utilizes a higher-quality heating coil. Each unit is backed with a 1 year warranty that covers any defect related to the electrical components.