The Freeze Pipe Dual Percolation Chamber Bong is perfect for smokers looking for a high - quality, smooth smoking experience. Whether you're relaxing at home or hanging out with friends, this bong is a great choice. It's made of thick scientific glass and comes with an 18.8mm female joint and a matching handled honeycomb glass bowl. Before your smoke session, just pop the glycerin coil in the freezer for about an hour. It's easy to assemble, transport, and clean, making it a convenient option for regular use.