The new Black Sub-Herb vape tank is a one-of-a-kind new and advanced dry herb and concentrates vaping device that is one of MigVapor’s hottest sellers. Convert your current vape battery into a superior dry herb vaporizer simply by attaching the Mig Vapor Black Sub-Herb vape tank. It’s that easy. The Black-Sub-Herb tank works with your existing sub-ohm vape gear. The ceramic heating plate has no exposed heating element and heats up almost instantly. Just connect this to your sub-ohm vape battery, set the wattage between 17-27W and enjoy!