Introducing the marble cap for the Focus Carta! The Carta is an amazing erig with milky hits and tons of potential. This marble cap helps bring the device to the next level. One issue I have heard is that the oil goes up the side wall with the stock carb cap and quartz insert. Heat causes the oil to creep up the sidewall and not vaporize fully. This cap directs air in a tight stream from above the insert, with this design you were able to direct the airflow at the side wall and push the oil back down to the hot surface creating huge milky hits out of the Carta.