Best Dab AccessoriesThe Quartz Carb Cap / Terp Bead / Banger Kit includes the essential items that customers need to start dabbing. Contains a thick bottom opal quartz banger, two 6mm quartz terp beads and a matching quartz carb cap. Drop one or two of these quartz beads into your banger and put the directional carb cap in place for increased flavor and vapor production. The thick opal banger holds heat and releases it slowly over time. Banger bucket inner diameter measures 19mm. Carp cap diameter measures 22mm.