“Our Bangers are made from Borosilicate Glass and use inner cups made from the same material that has ferrous metal encased in between two sealed walls of Borosilicate completely sealed away from the dabbing environment and creating absolutely clean and sealed Borosilicate Glass Banger cups. This one of its kind Banger Cups combination is designed to specially heat by induction created by the wand, completely different but more heat efficient and easy to clean than a torch heated banger.” -getispire.com