The StemPod Si allows you to vaporize dry herbs from a wattage based box mod. This attachment has a convection heater and is made from high grade stainless steel with a high temp medical grade silicone cover. The StemPod Si is powered by Kanthal coils which can also be switched out with SS coils for temperature control. The StemPod Si also allows you to modify the vapor density by using the dual adjustable airflow vent. This dry herb vaporizer attachment is a more affordable version of the StemPod OG.