These are silicon carbide (SiC) Terp Pearls for your banger. These terp pearls have strong heat retention and tend not to chaz as easily as other materials. For those looking to change it up from typical quartz or ruby pearls, silicon carbide can be an excellent option! Due to silicon carbide being strong than quartz, these have the ability to scratch your quartz over time, so we do not recommend using these with luxury bangers.