Here you get 20ml high concentrate E-liquid in a 30ml Pen bottle which should be diluted with a booster shot. Then you add your 10ml booster base shot and shake well before use and you now have 30ml E-liquid ready for use. Your Nicotine level can be from 0-6mg nicotine depending on which shot you add. 10ml Base with 0mg = 0mg10ml Base with 3mg = 1mg10ml Base with 6mg = 2mg10ml Base with 9mg = 3mg10ml Base with 12mg = 4mg10ml Base with 15mg = 5mg10ml Base with 18mg = 6mg Ratio: 50%VG/50%PG Nicotine strength: 0mgBottle: 30ml Unicorn bottleContent: 20ml E-Liquid