This Vortex Carb Cap Combo is perfect for those who love using e - rigs such as the Puffco Peak, Focus V Carta, etc. When you're dabbing with your e - rig, this combo will take your experience to the next level. The 20mm Vortex Carb Cap and terp beads are made of high - quality borosilicate glass. It's suitable for anyone who wants to improve their dabbing hits, get better flavors, and keep their banger clean. The 20mm size of the carb cap ensures it fits all 20mm bangers commonly available in the market.