Diamondium Grade ASuperior Heat Retention and Distribution , High Purity Material; Clear and Uniform Appearance, Enhanced Flavor and Vapor ProductionClick HereDiamondium Grade BHigh thermal conductivity next to diamond, Greatly increase vapor volume, Excellent heat retentionClick HereDiamondium Grade DHigh thermal conductivity next to diamond Greatly increase vapor volume Durable,Clean,Mirror PolishedClick Here
