This is a glass funnel bowl which fits approximately 30g of shisha. This bowl has an elevated large hole in the center to prevent your shisha from dripping in your hookah stem. The Scali mod is also included with this bowl. What the Scali mod does is allow for better airflow. It basically a cap which fits right over the hole to allow for better circulation while smoking your hookah. This funnel bowl works great for shisha brands such as Tangiers as well as the juicier shishas such as Hookafina, Fantasia and Starbuzz.