A THC vape weed pen is a hand held device that vaporizes cannabis concentrates. The battery power heats the gas, producing vapor that is inhaled through the end. It typically contains a battery, a cartridge with cannabis oil, in addition to a mouthpiece. It may be used as an all-day vape or perhaps a periodic dab. It's 1ml of full spectrum cannabis oil and 900mg of CBD. The Terp Nation...