Bio The Go.pen atomizer is the heating coil that vaporizes the Herbal Concentrate in your go.pen. This atomizer works as the replacement for both the Original Go.pen and the Go.pen Plus. This product is intended for use with essential herbal concentrates and extracts in states where the sale and consumption of such herbal concentrates and extracts are legal. *Note: All atomizer sales are final. Returns will not be accepted.