~ EXHAUSTIVE RESEARCH ~ ~ PROVEN SCIENCE ~ ~ EXTRAORDINARY YIELDS ~ ~ OVERDRIVE - is an ultra premium flower booster with an extremely extensive and very complex array of phosphorus and potassium sources. Hormones and catalytic agents are added in order to pack on extra girth and weight that produce unparalleled flower and oil production during the critical last weeks of flowering when plants show the most sizeable gains. Brand New / Sealed 4 Liter size