Romulan Grapefruit 1 Gram Vape Cartridge HYBRID Grapefruit, Herbal, and Earthy Appropriately, this hybrid is a cross of Romulan and Grapefruit. It's effects are both relaxing and euphoric. Definitely an excellent strain for true "couch-y" relaxation. Kingpen is a highly potent, lab tested, premium distillate cartridge. It is BHO extracted, cold-pressed, and filtered to create the highest distillate standard.