Oil Black Leaf Quartz Banger with Insert DishThis insert pan from Oil Black Leaf will expand the lifespan of your banger and is more affordable to replace. The insert bowl is designed for bangers with an internal diameter from 19mm and is handmade of very heat restistant quartz glass. The insert bowl serves additionally for heat retention. The glass is matt which means that the surface has more pores and therefore more surface for more smoke development. Just insert into the banger, heat to the