Months of hard work in the lab perfecting this special formula. Engineered to give you the maximum CBD effect, you really don’t need anything else! Try CHILL CBD Oil and just chill! Using our CBD Oil Vape Tank is very easy. Inside your package is a .5 milliliter tank. The tank is 510 threaded and will fit on 95% of all Vape Pens. Take a puff of our CHILL CBD Oil, holding in each puff for a few seconds before exhaling.